Question

use the diagram to identify the special angle pairs
∠adc and ∠bdc are
a pair of complementa
eca and acd
complementary angles
congruent angles
right angles
supplementary angles

Explanation:

Step1: Recall the definitions

Complementary angles sum to \(90^{\circ}\), congruent angles are equal in measure, right angles are \(90^{\circ}\), and supplementary angles sum to \(180^{\circ}\).

Step2: Analyze \(\angle ADC\) and \(\angle BDC\)

Since \(\angle ADC+\angle BDC = 180^{\circ}\) (they form a linear pair), they are supplementary angles.

Answer:

supplementary angles