Question

In triangle ABC, D and E are points on AB and Ac respectively such that DE||BC. If AE = 2 cm, EC = 3 cm and BC = 10 cm, then DE is equal to

Answer 1

then maybe de =2cm............

Answer 2

AE=2cm  EC=3cm Bc=10cm DE=? In triangle ADE and ABC agl.A=agl.A -common agl.ADE=agl.ABC -corresponding agls agl.AED=agl.ACB -corresponding agls Then by AAA-triangleADE~triangle ABC So,  AD/AB=AE/EC=DE/BC 2/3=DE/10 20=3DE DE=20/3                ANSWER