Question

can anyone solve 9th and 12 th question

Answer 1

ans 9 in triangle ABD and ACE

angle ABD =ACE( given)

AB=AC(GIVEN)

ANGLE A=ANGLE A (common )

hence ABD CONGRUENT TO ACE

Answer 2

Ans 12. If exterior angle is 120 then sum of interior angles will be 120 so if 1 is 40 ither will be 80 and the third angle of the triangle can be found out by angle sum property.. It will be 60