Page 157 - Grade 10 C.Math
P. 157

2.(a) BC = 6.4 cm, AB = 5.6 cm / AC = 6 cm ePsf] lqe'h ABC ;Fu a/fa/ If]qkmn x'g] lqe'h
                       /rgf ug'{xf];\, h;sf] Pp6f e'hf 7 cm 5 .
                  (b)  LM = 6.3 cm, LNM = 30° / LMN = 45° ePsf] lqe'hsf] If]qkmn;Fu a/fa/ If]qkmn x'g]
                       OLM sf] /rgf ug'{xf];\, h;df OM = 7.5 cm 5 .

                  (c)  PQ = 6.5 cm, QR = 7 cm / PR = 6 cm ePsf] lqe'hsf] If]qkmn;Fu a/fa/ x'g] u/L Pp6f
                       Curriculum Development Centre
                       e'hfsf] nDafO 8 cm ePsf] Pp6f lqe'hsf] /rgf ug'{xf];\ .

                  3.(a) PQ = 6.5 cm, QR = 6 cm / PR = 5.5 cm ePsf]  Pp6f  lqe'h;Fu  a/fa/  If]qkmn  x'g  ]
                       TSR = 75° ePsf] ;dfgfGt/ rt'e'{h RSTI /rgf ug'{xf];\ .
                  (b)   ABC df b = 5 cm, c = 4.8 cm / ABC = 45° 5 . pSt lqe'h;Fu a/fa/ If]qkmn x'g] /
                       Pp6f e'hf CD = 7.5 cm ePsf] ;dfgfGt/ rt'e'{h CDEF sf] /rgf ug'{xf];\ .

                  (c)   AB = 4 cm, BC = 3.2 cm / AC = 3.5 cm ePsf] ABC sf]  If]qkmn;Fu  a/fa/  x'g]  u/L
                       BE = 5 cm ePsf] ;dfgfGt/ rt'e'{h BXYE sf] /rgf ug'{xf];\ .

                  4.(a) AB = 6cm, BC = 4.5 cm / DAB = 60° ePsf] ;dfgfGt/ rt'e'{h;Fu a/fa/ If]qkmn x'g]
                       AEF sf] /rgf ug'{xf];\, h;df FE = 7.5 cm 5 .

                  (b)  e'hfx¿  AB = 6 cm, BC = 4 cm / BAD = 45° ePsf] ;dfgfGt/ rt'e'{h  ABCD ;Fu
                       a/fa/ If]qkmn x'g] u/L APQ sf] /rgf ug'{xf];\, h;df APQ = 60° 5 .
                  (c)   PQ = 5 cm, ljs0f{ PR = 6cm / ljs0f{ QS = 8 cm ePsf] ;dfgfGt/ rt'e'{h PQRS ;Fu
                       a/fa/ If]qkmn x'g] lqe'hsf] /rgf ug'{xf];\ .

                  5.(a) e'hfx¿ PQ = QR = 5.5 cm, RS= SP = 4.5 cm / SPQ = 75° ePsf] rt'e{h PQRS ;Fu a/fa/
                       If]qkmn x'g] PST sf] /rgf ug'{xf];\ .

                  (b)  AB = 4.5 cm, BC = 5.5 cm, CD = 5.7 cm / DA = 4.9 cm / ljs0f{ BD = 5.9 cm ePsf]
                       rt'e'{h ABCD sf] If]qkmn;Fu a/fa/ x'g] DAE sf] /rgf ug'{xf];\ .

                  (c)   PQ = 5 cm, QR = 9.6 cm, RS = 4.5 cm, SP = 5.4 cm / QS = 6.5 cm ePsf] rt'e'{h PQRS sf]
                       a/fa/ If]qkmn x'g] QRT sf] /rgf ug'{xf];\ .
                  (d)  ;dafx' rt'e'{h PQRS sf] /rgf ug'{xf];\, h;df ljs0f{x¿ PR = 6 cm / QS = 8 cm 5g\ . ;f]
                       ;dafx' rt'e'{h;Fu a/fa/ If]qkmn x'g] PSA sf] /rgf ug'{xf];\ .

                  (e)   6 cm nDafO / 4.5 cm rf}8fO ePsf] cfotsf] If]qkmn;Fu a/fa/ x'g] Pp6f sf]0f 60°
                       ePsf] lqe'hsf] /rgf ug'{xf];\ .

                  6.  kfFr kfFr hgfsf] ;d"x lgdf{0f ug'{xf];\ . afF;sf l;Gsf, 5\jfnL jf h'; kfOksf] k|of]u u/L ;a}
                       ;d"xn]  dflysf  k|To]s  /rgfsf  Ps  Ps  cf]6f  gd'gf  lgdf{0f  u/L  sf8{af]8{df  6fF;L

                       sIffsf]7fdf k|:t't ug'{xf];\ .

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