Question

Given: ∠A is a straight angle. ∠B is a straight angle.

Prove: ∠A≅∠B

It is given that ∠A and ∠B are straight angles. This means that _____ because of the_____. Using the_____, m∠A=m∠B . Finally, ∠A≅∠B by______.

Answer 1

Just took the quiz, the right answers are:

It is given that ∠A and ∠B are straight angles. This means that m∠A = 180° and m∠B = 1 because of the definition of straight angles .

Using the substitution property of equality , m∠A = m∠B . Finally, ∠A≅∠B by angle congruence postulate .

Answer 2

Given: ∠A is a straight angle. ∠B is a straight angle.

We need to Prove: ∠A≅∠B.

We know straight angles are of measure 180°.

So, ∠A and <B both would be of 180°.

It is given that ∠A and ∠B are straight angles. This means that both angles are of 180° because of the the definition of straight angles. Using the definition of equality, m∠A=m∠B . Finally, ∠A≅∠B by definition of congruent.