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# WARM UP 1.What is an Acute Triangle? 2.What is an Obtuse Triangle? 3.What is a Right Triangle?...

Date post: 21-Jan-2016
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WARM UP 1. What is an Acute Triangle? 2. What is an Obtuse Triangle? 3. What is a Right Triangle? 4. What is a Scalene Triangle? 5. What is an Isosceles Triangle? 6. What is an Equilateral Triangle? 7. Can an Equilateral Triangle also be an Acute Triangle?
Transcript
• WARM UPWhat is an Acute Triangle?What is an Obtuse Triangle?What is a Right Triangle?What is a Scalene Triangle?What is an Isosceles Triangle?What is an Equilateral Triangle?Can an Equilateral Triangle also be an Acute Triangle?

• 3.7 Angle-Side TheoremsTheorem 20: If two sides of a triangle are congruent, the angles opposite the sides are congruent.IFThen

• Theorem 21: If two angles of a triangle are congruent, the sides opposite the angles are congruent.IfThen

• These are ways to prove an isosceles triangle:Two sides are congruentTwo angles are congruentMarkings on a triangle:Smaller side matches opposite

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