Question

If the sum of the measures of two angles is 180°, then the angles are ?.

Short answer

If the sum of two angles say∠1and∠2 is 180°, then the angles are supplementary.

Step-by-step solution

Step 1. To find the linear pairs of angles.

The two angles∠1 and ∠2 are linear pairs of angles whose sum is 180° as follows $\angle 1\pm =180°$.

Step 2. Use the property of linear angles.

The linear pairs of angles are also called supplementary whose sum is 180°.

Step 3. Find the supplementary angles.

The supplementary angles are ∠1 and ∠2 whose sum is 180°.