acute angle acute triangle Cartesian coordinate system concave polygon congruent figures

Transcription

1 acute angle acute triangle Cartesian coordinate system concave polygon congruent figures

2 convex polygon coordinate grid coordinates dilatation equilateral triangle

3 horizontal axis intersecting lines isosceles triangle obtuse angle obtuse triangle

4 ordered pair (x,y) origin parallel lines perpendicular lines quadrant

5 quadrilateral reflection reflex angle regular polygon right angle

6 right prism right triangle rotation scalene triangle similar figures

7 tessellations tiling the plane transformation translation vertical axis

8 x-axis x-coordinate y-axis y-coordinate

9 An angle measuring less than 90 o. A triangle with three acute angles (angles whose measure is between 0 o and 90 o ). A plane that contains an x-axis (horizontal) and a y- axis (vertical) which are used to describe the location of a point. A polygon that has at least one angle greater than 180 o

10 Figures that have the same size and shape, but not necessarily the same orientation. A polygon that has all angles less than 180 o A two-dimensional plane that contains an x-axis (horizontal) and a y-axis (vertical), which are used to describe the location of a point. Also called Cartesian coordinate grid or Cartesian plane. The numbers in an ordered pair that locate a point on a grid. Example: The coordinates (3, 5) describe a location found by moving 3 units to the right and 5 units up from the origin (0, 0).

11 A transformation that enlarges or reduces a shape by a scale factor to form a similar shape. A triangle with three equal sides. The horizontal number line on a coordinate grid. Also referred to as the x-axis. Lines that meet or cross each other and that have exactly one point in common, the point of intersection.

12 A triangle that has two sides of equal length. An angle measuring greater than 90 o and less than 180 o. A triangle with one angle greater than 90 o. Two numbers, in order, that are used to describe the location of a point on a plane, relative to a point of origin (0, 0); Example: (2,6)

13 The origin on a Cartesian coordinate plane is (0,0). Lines on the same flat surface that do not intersect Two lines in the same plane that intersect at a 90 o angle. One quarter of the Cartesian plane, bounded by the coordinate axes.

14 A four-side polygon. Example: A square, a rectangle, a parallelogram, a rhombus, and a trapezoid. A transformation that is illustrated by a figure and its image in a mirror line. An angle measuring between 180 o and 360 o. A polygon that has all sides equal and all angles equal.

15 A 90 o angle A prism whose rectangular faces are perpendicular to its congruent bases. A triangle that has one right angle (an angle that measures 90 o ). A transformation that turns a shape about a fixed point to form a congruent shape. Also called a turn.

16 A triangle with three sides of different lengths. Figures with the same shape, but not necessarily the same size. If one shape is similar to another shape, there exists a dilatation that will transform the first shape into the second shape. A tiling pattern in which shapes are fitted together with no gaps or overlaps. A regular tessellation uses congruent shapes. The process of using repeated shapes, which may or may not be congruent, to cover a region completely

17 A change in a figure that results in different position, orientation, or size. The transformations include translations, reflections, rotations, and dilatations. A transformation that moves a point or a figure in a straight line to another position on the same flat surface to form a congruent shape. The vertical line on a coordinate grid. Also referred to as the y-axis. The horizontal number line on a coordinate grid.

18 The first number in an ordered pair that describes the location of a point on the horizontal axis. The vertical number line on a coordinate grid. The second number in an ordered pair that describes the location of a point on the vertical axis.