Question

Measure of ∡5


(Hint: What theorem lets you compare ∡3 and ∡5?)

Answer 1

mAngle5 = 52° by

Alternate Interior angles

Explanation:

When you have a pair of parallel lines and a transversal (the line that crosses them both)

this set up makes 8 angles....ALL the angles are either the same measure or they add up to 180°. Literally, if you know the measure of ONE angle, you can find the measure of all 8 angles. Its only two different numbers for all 8.

So, for your problem the two angles are in between the parallel lines (interior) and on different sides of the tranversal (alternate). By the Alternate Interior Angle Theorem they are congruent. One of them is 52° so the other one is also 52°