Question

Draw angle DEF = 72°. construct 3 upon 4 angle DEF using a compass

Answer 1

I hope it will help you

Answer 2

Refer attachment

Construction steps:

• Draw a line EF
• Make an angle of 72° on E
• Taking E as center, draw an arc intersecting the line DE and EF
• Taking H and G as center draw an arc which meet each other at I and the arc HG at J
• Now taking H and J as centers again draw two arcs, which meet each other at K
• Join KE and extend it up to L
• Thus ∠LEF = 3/4  ∠LEF