SparkNotes: Geometric Proofs: Problems

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Problems

Prove the following statements indirectly.

Problem 3.1:

Given:

Triangle ABC is an isosceles triangle with base AC.
Segment BE is a median.

Prove:

Segment BE is an angle bisector.

[Solution]

Problem 3.2:

Given: Circle F is inscribed in triangle ABC.
Prove: Angle DCF is congruent to angle ECF. [Solution]

Problem 3.3: Use indirect reasoning to explain why a triangle cannot have more than one obtuse angle. [Solution]

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	Geometry
	Math Basics

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