Sample Pages from. Leveled Texts for Mathematics: Geometry

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1 Smpl Pgs rom Lvl Txts or Mthmtis: Gomtry Th ollowing smpl pgs r inlu in this ownlo: Tl o Contnts Rility Chrt Smpl Pssg For orrltions to Common Cor n Stt Stnrs, pls visit Onus Driv Huntington Bh, CA FAX

2 Tl o Contnts Wht Is Dirntition?...4 How to Dirntit Using This Prout...5 Gnrl Inormtion Aout Stunt Popultions...6 Blow-Gr-Lvl Stunts...6 English Lngug Lrnrs...6 On-Gr-Lvl Stunts...7 Aov-Gr-Lvl Stunts...7 Strtgis or Using th Lvl Txts...8 Blow-Gr-Lvl Stunts...8 English Lngug Lrnrs Aov-Gr-Lvl Stunts How to Us This Prout Rility Chrt Componnts o th Prout Tips or Mnging th Prout Corrltions to Mthmtis Stnrs Lvl Txts Angls All Aroun Unrstning Tringls To Cross or Not to Cross Quriltrls Clssiying 2-D Shps Irrgulr Shps Congrunt n Similr Figurs Unrstning 3-D Shps Unrstning Prisms Th Coorint Pln Cirls Symmtry Rltions Rottions Trnsltions Appnis Rrns Cit Contnts o Thr Rsour CD Shll Eution #50717 Lvl Txts or Mthmtis: Gomtry

3 How to Us This Prout Rility Chrt Componnts o th Prout Primry Sours Titl o th Txt Str Cirl Squr Tringl Angls All Aroun Unrstning Tringls To Cross or Not to Cross Quriltrls Clssiying 2-D Shps Irrgulr Shps Congrunt n Similr Figurs Unrstning 3-D Shps Unrstning Prisms Th Coorint Pln Cirls Symmtry Rltions Rottions Trnsltions Eh lvl o txt inlus multipl primry sours. Ths oumnts, photogrphs, n illustrtions intrst to th txts. Th mthmti imgs lso srv s visul support or son lngug lrnrs. Thy mk th txts mor ontxt-rih n ring th xmpls to li. 16 #50717 Lvl Txts or Mthmtis: Gomtry Shll Eution

4 To Cross or Not to Cross Look t th trin trks. It my look lik th trks will mt. But th two stl ros will nvr intrst! Bsi Fts Lins Lins r nlssly stright. Thy go on n on. W rw rrows t h n o lin. This shows tht it ontinus orvr. A B sgmnt AB or lin AB Prlll or Intrsting Thr r mny kins o lins. On typ o lin is ll. Prlll lins will nvr ross. Thy will lwys th sm istn prt. Whn lins ross thy intrst t on point. A ry is lin with strting point t on si. But it hs no ning point. A sgmnt is lin with two npoints. Rys n n. Thy n lso intrst. rys rys Lins, rys, n n intrst. Whn thy o, ngls r orm. You know tht right ngl hs msur o 90. Whn right ngls r orm, th lins, rys, or tht orm thos ngls r ll prpniulr. prpniulr rys prpniulr prpniulr lins 37 Shll Eution #50717 Lvl Txts or Mthmtis: Gomtry

5 Working with Prlll n Lins Lt s in ll th pirs o n prpniulr sis in th xmpls low. Prlll n n Prlll n n n Prlll n n n n n non n n Prlll n Lins in Our Dily Livs Look t th room shown. Thr r mny xmpls o oth typs o lins. Th piturs, tl, hir, n rwrs r only w. I th hnril ws not with th s o th posts, it oul us prolms. I th stir stps wr not with h othr n with th groun, thn nyon using th stps woul likly ll! You Try It Fin h pir o n prpniulr sis in th igur low. Prlll n n n n n g n g n g n 38 #50717 Lvl Txts or Mthmtis: Gomtry Shll Eution

6 To Cross or Not to Cross Look t th trin trks. Evn though it my look lik it, th two stl ros will nvr intrst! Bsi Fts Lins Lins r nlssly stright. Thy go on n on. W rw rrows t h n o lin. This shows tht it ontinus orvr. A B sgmnt AB or lin AB Prlll or Intrsting Thr r mny kins o lins. On typ o lin is ll. Prlll lins will nvr ross. Thy will lwys th sm istn prt. I lins wr to ross thy woul intrst t on point. Whn lins ross h othr w sy tht thy intrst. A ry is lin tht hs strting point. But it hs no ning point. A sgmnt is lin with two npoints. Rys n n. Thy n lso intrst. rys rys Lins, rys, n n intrst. Whn thy o, ngls r orm. You know tht right ngl hs msur o 90. Whn right ngls r orm, th lins, rys, or tht orm thos ngls r ll prpniulr. prpniulr rys prpniulr prpniulr lins 39 Shll Eution #50717 Lvl Txts or Mthmtis: Gomtry

7 Working with Prlll n Lins Lt s in ll th pirs o n prpniulr sis in th xmpls low. Prlll n n Prlll n n n Prlll n n n n n non n n Prlll n Lins in Our Dily Livs Look t th room shown. Thr r mny xmpls o oth typs o lins. Th piturs, tl, hir, n rwrs r only w. I th hnril ws not with th s o th posts, it oul us prolms. I th stir stps wr not with h othr n with th groun, thn nyon using th stps woul likly ll! You Try It Fin h pir o n prpniulr sis in th igur low. Prlll n n n n n g n g n g n 40 #50717 Lvl Txts or Mthmtis: Gomtry Shll Eution

8 To Cross or Not to Cross Look t th trin trks. Evn though it my look lik it, th two stl ros will nvr intrst! Bsi Fts Lins Lins r nlssly stright n nlssly long. W rw rrows t h n o lin to show tht it ontinus orvr. A B sgmnt AB or lin AB Prlll or Intrsting Thr r mny irnt kins o lins. On typ o lin is ll. Prlll lins will nvr ross n will lwys th sm istn prt. I lins wr to ross, thy woul intrst t on point. Whnvr lins ross on nothr w sy tht thy r lins. A ry is lin tht hs strting point, ut no ning point, n sgmnt is lin with two npoints. Rys n n or thy n intrst. rys rys Whn lins, rys, or intrst, ngls r orm. Rmmr tht right ngl hs msur o 90. Whn right ngls r orm, th lins, rys, or tht orm thos ngls r ll prpniulr. prpniulr rys prpniulr prpniulr lins 41 Shll Eution #50717 Lvl Txts or Mthmtis: Gomtry

9 Working with Prlll n Lins Lt s in ll th pirs o n prpniulr sis in th xmpls low. Prlll n n Prlll n n n Prlll n n n n n non n n Prlll n Lins in Our Dily Livs Look t th room shown hr. Thr r mny xmpls o oth typs o lins. Th piturs, tl, hir, n rwrs r only w. I th hnril ws not with th s o th posts, it oul us prolms, n i th stir stps wr not with h othr n with th groun, thn nyon using th stps woul surly t risk o lling! You Try It Fin h pir o n prpniulr sis in th igur low. Prlll n n n n n g n g n g n 42 #50717 Lvl Txts or Mthmtis: Gomtry Shll Eution

10 To Cross or Not to Cross Evn though it my look lik it, th two stl ros o ths trin trks will nvr intrst! Bsi Fts Lins Lins r nlssly stright n nlssly long. W rw rrows t h n o lin to show tht it ontinus ininitly. A B sgmnt AB or lin AB Prlll or Intrsting Thr r vrious typs o lins, inluing n lins. Prlll lins will nvr ross n will lwys th sm istn prt. Whnvr lins ross on nothr w ll thm lins. A ry is lin tht hs strting point, ut no ning point, n sgmnt is lin with two npoints. Rys n n or thy n intrst. rys rys Whn lins, rys, or intrst, ngls r orm. Rmmr tht right ngl hs msur o 90. Whn right ngls r orm, th lins, rys, or tht orm thos ngls r ll prpniulr. prpniulr rys prpniulr prpniulr lins 43 Shll Eution #50717 Lvl Txts or Mthmtis: Gomtry

11 Working with Prlll n Lins Lt s in ll th pirs o n prpniulr sis in th xmpls low. Prlll n n Prlll n n n Prlll n n n n n non n n Prlll n Lins in Our Dily Livs Stuy th room pitur hr, n you n in mny xmpls o oth typs o lins. Th piturs, tl, hir, n rwrs r only w. I th hnril ws not with th s o th posts, it oul us prolms, n i th stir stps wr not with h othr n with th groun, thn nyon using th stps woul surly t risk o lling! You Try It Fin h pir o n prpniulr sis in th igur low. Prlll n n n n n g n g n g n 44 #50717 Lvl Txts or Mthmtis: Gomtry Shll Eution

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