If angle A is a complement of angle B, angle B and angle C are vertical angles, and the supplement of C has a measure of 140°. Find the measure of A.

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Engineering

Yoselin Hawkins

15 October, 20:17

If angle A is a complement of angle B, angle B and angle C are vertical angles, and the supplement of C has a measure of 140°. Find the measure of A.

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Answers (1)

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Jamarcus · Answer 1

50°

Explanation:

Complementary angles add up to 90°.

Supplementary angles add up to 180°.

Vertical angles are equal.

A + B = 90°

B = C

C = 180° - 140°

C = 40°

B = 40°

A = 50°