Question

Draw BC that divides ABD

into two smaller angles.

Measure each angle. Solve

this problem any way you

choose.

Answer 1

Attached below is the missing figure

answer : ∠ABD = ∠AbC + ∠ CbD

Explanation:

when Line BC is drawn to divide ∠ABD equally

solving each angle :

∠ABD > ∠AbC also angle

∠ABD > ∠ CbD

∴ ∠ABD = ∠AbC + ∠ CbD

assuming ∠B = 60°

therefore ∠b = 60 / 30 = 30°