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Warm-up. Legs: Congruent sides Of an isosceles triangle Base: Third side of an Isosceles triangle Vertex Angle: the angle the two legs form Base Angle:

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Presentation on theme: "Warm-up. Legs: Congruent sides Of an isosceles triangle Base: Third side of an Isosceles triangle Vertex Angle: the angle the two legs form Base Angle:"— Presentation transcript:

1 Warm-up

2 Legs: Congruent sides Of an isosceles triangle Base: Third side of an Isosceles triangle Vertex Angle: the angle the two legs form Base Angle: the angle formed by the leg and the base

3 If the two legs are congruent, then the base angles are congruent

4 The converse is also true. If _______________ are congruent, then _____________are congruent.

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7 If we can prove a triangle to be isosceles, then we can prove two angles to be perpendicular, and we can prove that line of symmetry to be a midpoint.

8 What is the value of x?

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11 When you are finished with your quiz… You are to work on Pg. 254 #6 – 13, 16-19


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