Question

vertical/adjacent/complementary angles l2
question
find the measure of the missing angle.
answer
attempt 1 out of 3
a = ​°
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Explanation:

Step1: Recall the sum of angles

The sum of the three angles is \(180^{\circ}\), and one of them is \(90^{\circ}\) (right - angle).

Step2: Calculate the missing angle

We know that \(67^{\circ}+90^{\circ}+a = 180^{\circ}\). Then \(a=180^{\circ}-(67^{\circ} + 90^{\circ})\).
First, calculate \(67^{\circ}+90^{\circ}=157^{\circ}\).
Then \(a = 180^{\circ}-157^{\circ}\).

Answer:

\(23\)