Question

Abc is an isosceles triangle in which ab=bc and angle a: angle b=2:5 then find angle a

Answer 1

Answer:

Step-by-step explanation:

draw a bisector of angle A to BC name as AD.

now in triangle ABD and ADC

AB=AC (given)

angle BAD=angle CAD (AD bisects angle A)

AD=AD (common )

by sas congruent rule

triangles ABD=ADC

therefore, by c.p.c.t angle B=angle C

Hope it helps you...