Geo - H9 Practice Test Multiple hoice Identify the choice that best completes the statement or answers the question. 1. Find the area of the parallelogram. a. 35 in 2 c. 21 in 2 b. 14 in 2 d. 28 in 2 2. Find h in the parallelogram. a. 4.8 units c. 9.6 units b. 96 units d. 15 units 3. store sells circular rugs in three different sizes. The rugs come in diameters of 8 ft, 12 ft, and 16 ft. Find the areas of the three different sizes of rugs. Round to the nearest tenth. a. 201.1 ft 2 ; 452.4 ft 2 ; 804.2 ft 2 c. 50.3 ft 2 ; 113.1 ft 2 ; 201.1 ft 2 b. 113.1 ft 2 ; 201.1 ft 2 ; 452.4 ft 2 d. 50.3 ft 2 ; 201.1 ft 2 ; 452.4 ft 2 4. Find the area of a regular hexagon with side length 4 m. Round to the nearest tenth.
a. 83.1 m 2 c. 41.6 m 2 b. 24 m 2 d. 20.8 m 2 5. Use a composite figure to estimate the area of the irregular shape. The grid has squares with side lengths of 1 m. a. 10.5 m 2 c. 17.5 m 2 b. 6.0 m 2 d. 15.0 m 2 6. Find the area and perimeter of the polygon with vertices ( 3, 0), (3, 4), (5, 1), and ( 1, 3). a. area = 26 units 2 ; perimeter = 4 13 c. area = 13 units 2 ; perimeter = 6 13 units units b. area = 13 units 2 ; perimeter = 4 13 d. area = 26 units 2 ; perimeter = 6 13 units units 7. square has a perimeter of 24 cm. If the area of a square is quadrupled and its height remains constant, what happens to its base length? a. The base length is multiplied by 4. c. The base length is increased by 4. b. The base length is divided by 4. d. The base length is decreased by 4. 8. point is chosen randomly on. Find the probability that the point is not on. a. 1 c. 6 4 b. 3 d. 3 4 9. When a certain SUV travels at 30 mph, it has a stopping distance of 50 feet. If a cardboard box falls off a truck between 30 to 70 feet in front of this SUV, what is the probability that the SUV will hit the box? a. 5 c. 2 7 7
b. 1 d. 5 2 4 10. You are designing a target that is a square inside a 48 cm by 72 cm rectangle. What is the length of a side of the square if the target has a probability of 1 24? What is the length of a side of the square if the target has a probability of 2 3? a. 12 cm; 8 cm c. 144 cm; 8 cm b. 12 cm; 48 cm d. 144 cm; 48 cm Numeric Response 11. flange is shaped like a square with a circle cut from the center of it. How many square centimeters is the area of the flange? Round to the nearest hundredth. 12. Suppose the dimensions of a rectangle with a perimeter of 22 inches are tripled. Find the perimeter of the new rectangle in inches. Matching Match each vocabulary term with its definition. a. apothem b. center of a circle c. center of a regular polygon d. radius e. circle f. diameter g. geometric probability h. composite figure i. central angle of a regular polygon 13. a method of calculating probability based on a geometric measure such as length or area 14. the point that is equidistant from all vertices of the regular polygon 15. a plane figure made up of triangles, rectangles, trapezoids, circles, and other simple shapes, or a three-dimensional figure made up of prisms, cones, pyramids, cylinders, and other simple threedimensional figures 16. an angle whose vertex is the center of the regular polygon and whose sides pass through consecutive vertices
17. the point inside a circle that is the same distance from every point on the circle 18. the perpendicular distance from the center of a regular polygon to a side of the polygon 19. the set of points in a plane that are a fixed distance from a given point
Geo - H9 Practice Test nswer Section MULTIPLE HOIE 1. NS: Step 1 Use the Pythagorean Theorem to find the height h. 3 2 + h 2 = 5 2 h = 4 in 2 Step 2 Use h to find the area of the parallelogram. = bh rea of a parallelogram = (7)(4) Substitute 7 for b and 4 for h. = 28 in 2 Simplify. Use the Pythagorean Theorem to find the height. Multiply this by the base. Use the Pythagorean Theorem to find the height. Multiply this by the base. Use the Pythagorean Theorem to find the height. Multiply this by the base. orrect! PTS: 1 IF: asic REF: Page 589 OJ: 9-1.1 Finding Measurements of Parallelograms NT: 12.2.1.h TOP: 9-1 eveloping Formulas for Triangles and Quadrilaterals 2. NS: Step1 Find the area of the parallelogram. = 16(12) = 192 The area of the parallelogram is twice the area of a right triangle with base 12 and height 16. Step2 Use the result to find h. 20h = 192 The area of the parallelogram is equal to the area of a rectangle with height h and width 20. h = 9.6 Solve. Find the area of a right triangle with base 12 and height 16. ompare that to the area of a rectangle with height h and width 20. Find the area of a right triangle with base 12 and height 16. ompare that to the area of a rectangle with height h and width 20. orrect! Find the area of a right triangle with base 12 and height 16. ompare that to the area of a rectangle with height h and width 20.
PTS: 1 IF: dvanced NT: 12.3.3.f TOP: 9-1 eveloping Formulas for Triangles and Quadrilaterals KEY: multi-step 3. NS: The area of a circle is πr 2, and the radius is half of the diameter. The area of the 8-ft rug: = π(4) 2 50.3 ft 2 The area of the 12-ft rug: = π(6) 2 113.1 ft 2 The area of the 16-ft rug: = π(8) 2 201.1 ft 2 Use the radius to find the area. Use the radius to find the area. orrect! Use the same method you used to find the area of the smallest rug to find the areas of the other rugs. PTS: 1 IF: verage REF: Page 601 OJ: 9-2.2 pplication NT: 12.2.1.h TOP: 9-2 eveloping Formulas for ircles and Regular Polygons KEY: area circle 4. NS: The perimeter is 6(4) = 24 m. The hexagon can be divided into 6 equilateral triangles with side length 4 m. y the 30º-60º-90º Triangle Theorem, the apothem is 2 3 m. = 1 2 ap rea of a regular polygon = 1 2 (2 3) 24 Substitute 2 3 for a and 24 for P. = 24 3 41.6 m 2 Simplify. ivide your answer by 2. ivide the perimeter by the apothem. To find the apothem, multiply half of one side by the square root of 3. orrect! Multiply your answer by 2. PTS: 1 IF: verage REF: Page 602 OJ: 9-2.3 Finding the area of a Regular Polygon NT: 12.2.1.h TOP: 9-2 eveloping Formulas for ircles and Regular Polygons 5. NS: raw a composite figure that approximates the irregular shape. Find the area of each part of the composite figure.
The area of the irregular shape is about 10.5 m 2. rea of triangle I: = 1 bh = 1 2 2 (4)(1) = 2 m2 rea of triangle II: = 1 bh = 1 2 2 (1)(4) = 2 m2 rea of triangle III: = 1 bh = 1 2 2 (2)(3) = 3 m2 rea of triangle IV: = 1 bh = 1 2 2 (1)(1) = 0.5 m2 rea of rectangle V: = bh = (3)(1) = 3 m 2 rea of composite figure: 2 + 2 + 3 + 0.5 + 3 = 10.5 m 2 orrect! raw a composite figure that approximates the irregular shape. Find the area of each part of the composite figure. raw a composite figure that approximates the irregular shape. Find the area of each part of the composite figure. raw a composite figure that approximates the irregular shape. Find the area of each part of the composite figure. PTS: 1 IF: verage REF: Page 608 OJ: 9-3.4 Estimating reas of Irregular Shapes TOP: 9-3 omposite Figures 6. NS: Step 1 appears to be a rectangle. To verify this, show that the sides are perpendicular. NT: 12.2.1.h slope of = 4 0 3 ( 3) = 4 6 = 2 3 slope of = 1 4 5 3 = 3 2 slope of = 3 1 1 5 = 4 6 = 2 3 slope of = 3 0 1 ( 3) = 3 2 The consecutive sides are perpendicular, so is a rectangle.
Step 2 Let be the base and be the height of the rectangle. Use the istance Formula to find each side length. = (5 ( 1)) 2 + (1 ( 3)) 2 = 52 = 2 13 units = ( 3 ( 1)) 2 + (0 ( 3)) 2 = 13 units The area of is = bh = ( 13)(2 13) = 26 units 2. The perimeter of is P = + + + = 6 13 units. heck for algebra mistakes. To find the length of a segment, use the istance Formula. To find the length of a segment, use the istance Formula. orrect! PTS: 1 IF: verage REF: Page 617 OJ: 9-4.2 Finding Perimeter and rea in the oordinate Plane NT: 12.2.1.h TOP: 9-4 Perimeter and rea in the oordinate Plane 7. NS: Since the square has a perimeter of 24 cm, each side length is 6 cm. The area of a square is its base multiplied by its height. Since the height remains constant, if its area is quadrupled, the original base length is multiplied by 4. orrect! If the area changes and the height remains constant, the base must change in the same manner. The new area is a multiple of the original area. The new area is a multiple of the original area. PTS: 1 IF: verage REF: Page 623 OJ: 9-5.3 Effects of hanging rea NT: 12.2.1.h TOP: 9-5 Effects of hanging imensions Proportionally 8. NS: P Ê Á not on ˆ = 1 Ë = 1 6 = 2 = 1 8 8 4 orrect! Find the probability of the point being on, namely ()/(). Subtract this from 1. Find the probability of the point being on, namely ()/(). Subtract this from 1.
Subtract this answer from 1. PTS: 1 IF: asic REF: Page 630 OJ: 9-6.1 Using Length to Find Geometric Probability NT: 12.4.4.b TOP: 9-6 Geometric Probability 9. NS: The probability of an event occurring is the interval of the required outcome divided by the total interval. reate a number line that depicts the possible distance from the box to the SUV and the stopping distance of the SUV. From the number line, it appears that, of a total of 40 feet over which the box may fall, the first 20 feet will force the SUV to hit the box. Thus the probability that the SUV will hit the box is P(SUV hits box)= Interval for collision to occur Total interval where box may fall = 20 40 = 1 2. The probability is the interval of the required outcome divided by the total interval. orrect! The probability is the interval of the required outcome divided by the total interval. The probability is the interval of the required outcome divided by the total interval. PTS: 1 IF: verage REF: Page 631 OJ: 9-6.2 pplication NT: 12.4.4.j TOP: 9-6 Geometric Probability 10. NS: The area of the 48 cm by 72 cm rectangle is 48(72) = 3, 456 cm 2. The area of the first square is 1 24 (3456) = 144 cm2. side of the square is 12 cm. The area of the second square is 2 3 (3456) = 2304 cm2. side of the square is 48 cm. square with sides measuring 8 cm is smaller than a square with sides measuring 12 cm. orrect! square with sides measuring 144 cm is larger than the rectangle.
square with sides measuring 144 cm is larger than the rectangle. PTS: 1 IF: dvanced NT: 12.4.4.b TOP: 9-6 Geometric Probability NUMERI RESPONSE 11. NS: 525.76 PTS: 1 IF: dvanced NT: 12.2.1.c TOP: 9-3 omposite Figures 12. NS: 66 PTS: 1 IF: verage NT: 12.2.1.c TOP: 9-5 Effects of hanging imensions Proportionally MTHING 13. NS: G PTS: 1 IF: asic REF: Page 630 TOP: 9-6 Geometric Probability 14. NS: PTS: 1 IF: asic REF: Page 601 TOP: 9-2 eveloping Formulas for ircles and Regular Polygons 15. NS: H PTS: 1 IF: asic REF: Page 606 TOP: 9-3 omposite Figures 16. NS: I PTS: 1 IF: asic REF: Page 601 TOP: 9-2 eveloping Formulas for ircles and Regular Polygons 17. NS: PTS: 1 IF: asic REF: Page 600 TOP: 9-2 eveloping Formulas for ircles and Regular Polygons 18. NS: PTS: 1 IF: asic REF: Page 601 TOP: 9-2 eveloping Formulas for ircles and Regular Polygons 19. NS: E PTS: 1 IF: asic REF: Page 600 TOP: 9-2 eveloping Formulas for ircles and Regular Polygons