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Chapter 2: Q8 (page 45)

State which postulate, definition, or theorem justifies the statement about the diagram.

If EB→ is the bisector of ∠AEC, then m∠AEB=12m∠AEC .

Short Answer

Expert verified

The angle bisector theorem justifies the statement about the diagram.

Step by step solution

01

Step 1. Observe the given diagram.

The diagram constitutes a straight-line AEF and two other lines meet the line AEF at the point E. EB→bisects ∠AEC.

02

Step 2. State the angle bisector theorem.

The relative lengths of the two parts in which the side of a triangle is separated by a line bisecting the opposite angle. This equates their relative lengths with the relative lengths of the triangle's other two sides.

03

Step 3. State the conclusion.

Considering the given diagram and the statement that if EB→is the bisector ∠AEC, then m∠AEB=12∠AEC.

Therefore, the statement about the diagram is justified by the angle bisector theorem.

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