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Use Isosceles and Equilateral Triangles

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Presentation on theme: "Use Isosceles and Equilateral Triangles"— Presentation transcript:

1 Use Isosceles and Equilateral Triangles
Geometry Section 4.7 Use Isosceles and Equilateral Triangles

2 Isosceles Triangle Vertex angle leg leg base Base angles

3 Base Angles Theorem If two sides of a triangle are congruent, then the angles opposite them are congruent

4 Converse of Base Angles Theorem
If two angles of a triangle are congruent, then the sides opposite them are congruent

5 Corollary to the Base Angles Theorem
If a triangle is equilateral, then it is equiangular

6 Corollary to the Converse of Base Angles Theorem
If a triangle is equiangular, then it is equilateral

7 Examples Examples

8 Assignment Section 4.7 Page 267
Problems #3-6, 8-12, 16, 24, 32, 40, 42

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