Angles 1 and 3 are directly across from each other.
They are called vertical angles. They share only a
vertex. They always measure the same. Therefore,
if angle 1 measures 27 degrees, angle 3 will
measure
degrees.

The measure of angle 3 is 27 degrees.

Step-by-step explanation:

Given,

angle 1 = 27°

Since angle 3 is same as angle 1, the measure of angle 3 is also 27 degrees

angle 3 = 27°.

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b

step-by-step explanation: