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HELP I have hard homework

HELP I have hard homework-example-1
User Bene
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1 Answer

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Answer:

b. 55°

Explanation:

Complementary angles have a sum of 90°.

∠ABC +∠CBD = 90° . . . . . . the given relation

∠ABC + 35° = 90° . . . . . . . . . substitute the given value

∠ABC = 55° . . . . . . . . . . . . . . subtract 35° from both sides

∠ABC = ∠EBF = 55° . . . . . . vertical angles are congruent

User Signum
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