# Bell Ringer - PowerPoint PPT Presentation

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Bell Ringer. Find the value of x. 4.3 Isosceles and Equilateral Triangles. Isosceles Triangle. Base Angle Theorem. If two sides of a triangle are congruent, then the angles opposite them are congruent. If AB = AC, then <C = <B. Converse of the Base Angle Theorem.

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Bell Ringer

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## Bell Ringer

Find the value of x.

## 4.3 Isosceles and Equilateral Triangles

Isosceles Triangle

Base Angle Theorem

If two sides of a triangle are congruent, then the angles opposite them are congruent.

If AB = AC, then <C = <B

Converse of the Base Angle Theorem

If two angles of a triangle are congruent, then the sides opposite them are congruent.

Find the value of the variable.

Equilateral Theorem

If a triangle is equilateral, then it is equiangular.

If a triangle is equiangular, then it is equilateral

Equiangular Theorem

Find the value of the variable.

## Write Summary (at least 3 sentences)

Homework:

Page 188-189 #7-15, 17-25