9th chp 7 TRIANGLES

In

 $\Delta ABC\ \cong\Delta PQR\$  and  $\Delta ABC\$  is not congruent to  $\Delta\ RPQ,\$  then which of the following is not true ?

• BC = PQ

• AC = PR 

• QR = BC

• AB = PQ

which of the following is not a criteria for congruent of triangles ?

• SAS

• ASA

• SSA

• SSS

If AB = QR, BC = PR and CA = PQ, then

• $\Delta\ ABC\ \cong\Delta PQR$

• $\Delta\ CBA\ \cong\Delta\ PRQ$

• $\Delta\ BAC\ \cong\ \Delta\ RPQ$

• $\Delta\ PQR\ \cong\Delta\ BCA$

In

 $\Delta\ ABC,\$  AB = AC and  $\angle$ B =  $50\degree$  , then  $\angle C\ =\$  ?

•  $40\degree$  

•  $50\degree$  

•  $80\degree$  

•  $130\degree$  

 In $\Delta\ ABC$  , AB = BC and  $\angle B\ =\ 80\degree$  . Then  $\angle A\ =?$ 

•  $40\degree$  

•  $50\degree$  

•  $80\degree$  

•  $100\degree$  

In $\Delta\ PQR,\ \angle R\ =\ \angle P$  and QR = 4 cm and PR = 5 cm, Then the length of PQ is 

• 4 cm

• 5 cm

• 2 cm

• 2.5 cm

It is given that $\Delta\ ABC\ \cong\ \Delta\ FDE\$  and AB = 5 cm ,  $\angle\ B\ =\ 40\degree$ 

and  $\angle A\ =\ 80\degree$  , then which of the following is true ?

•   $DF\ =\ 5\ cm,\ \angle F\ =\ 60\degree$  

•  $DF\ =\ 5\ cm,\ \angle E\ =\ 60\degree$  

•  $DE\ =\ 5\ cm,\ \angle E\ =\ 60\degree$  

•  $DE\ =\ 5\ cm,\ \angle D\ =\ 40\degree$  

In triangles ABC and PQR, AB = AC, $\angle C\ =\ \angle P$  and  $\angle B\ =\ \angle Q$  . The two triangles are

• isosceles but not congruent

• isosceles and congruent

• congruent but not isosceles

• neither congruent nor  isosceles

In triangles ABC and DEF, AB = FD and  $\angle A\ =\ \angle D$  . The two triangles will be congruent by SAS axiom if 

• BC = EF

• AC = DE

• AC = EF

• BC = DE

In given figure, AC bisects  $\angle A\ and\ \angle C$  . If AD = 5 cm, then find AB

• 5 cm

• 3 cm

• 4 cm

• none of these