Question

If quadrilateral abcd is parallelogram and m∠a is 78.2°, what is the measure of ∠c?

Answer 1

In a parallelogram, opposite angles are congruent.

Step-by-step explanation:

In a parallelogram, opposite angles are congruent. So if angle ∠a is 78.2°, then angle ∠c, which is opposite to angle ∠a, will also be 78.2°.

Answer 2

In a parallelogram, opposite angles are congruent. So, knowing m∠A allows us to determine that m∠C must be equal to 78.2°.

Step-by-step explanation:

Since ABCD is a parallelogram, opposite angles are congruent.

Therefore, m∠C is also 78.2°.

In a parallelogram, opposite angles are congruent. Therefore, if ∠A is 78.2°, then ∠C is also 78.2°.

If quadrilateral ABCD is a parallelogram, and m∠A is 78.2°, then the measure of m∠C is also 78.2°.

This is because opposite angles in a parallelogram are congruent, meaning they have the same measure.

So, knowing m∠A allows us to determine that m∠C must be equal to 78.2°.