m∠5 has the same measure as m∠12 and m∠9 which is 90°
Angles
An angle is formed when two lines intersect each other. Two angles are said to be supplementary if their measures add up to 180 degrees while Two angles are called complementary if their measures add up to 90 degrees.
m∠5 = 90° = x°
m∠5 = m∠12 = m∠9 = 90°
m∠5 has the same measure as m∠12 and m∠9 which is 90°
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