Question

1. use the rectangle below: if ( mangle bdc = 31^circ ), find the ( mangle adb ).

Explanation:

Step1: Identify angle at D

In rectangle ABCD, ∠ADC = 90°.

Step2: Calculate ∠ADB

∠ADB = ∠ADC - ∠BDC = 90° - 31° = 59°.

Answer:

59°