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Identifying Relationships from Diagrams

Given: Ray E B bisects ∠AEC.

∠AED is a straight angle.

Prove: m∠AEB = 45°

A horizontal line has points A, E, D. 2 lines extend from point E. One line extends to point B and another extends to point C. Angle C E D is a right angle.
Complete the paragraph proof.

We are given that Ray E B bisects ∠AEC. From the diagram, ∠CED is a right angle, which measures
degrees. Since the measure of a straight angle is 180°, the measure of angle
must also be 90° by the
. A bisector cuts the angle measure in half. m∠AEB is 45°.

1 Answer

5 votes

Answer:

Explanation:

Correct solution:

8x-4 + 2(2x+8) = 180

8x - 4 + 4x + 16 = 180

12x = 168

x = 14°

m∠AEC = 2x+8

= 2(14) + 8

= 36°

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