Question

draw an isosceles triangle ABC in which BC =5cm and vertex angle. angle a =70°​

Answer 1

Take a point M on XY and draw a line MP⊥XY

With M as centre and radius 5 cm, draw an arc cutting MP at A.

Construct B and C on XY such that

∠MAB =70˚/2=35˚ and ∠MAC=70˚/2=35°

Then ABC is the required triangle.