Isosceles and Equilateral Triangles | Baamboozle - Baamboozle

English 21 Public

Geometry Lesson 4.6

Study Slideshow

How do you call the two congruent sides of an isosceles triangle?

legs

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How do you call the angle which sides are the legs on an isosceles triangle?

vertex angle

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How do you call the side of an isosceles triangle opposite the vertex angle?

base

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How do you call the angles formed by the base and the congruent sides of an isosceles triangle?

base angles

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ΔVZY

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ΔVYX

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ΔWVX

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∠T ≅ ∠G

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Isosceles triangle theorem states that, if two _____ of an isosceles triangle are equal then the _____ opposite to the equal sides will also have the same measure.

sides, angles

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The Converse of the Isosceles Triangle Theorem states: If two _____ of a triangle are congruent, then _____ opposite those angles are congruent.

angles, sides

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Which statement correctly names two congruent angles?

∠JMK ≅ ∠JKM

∠PJM ≅ ∠PMJ

∠PML ≅ ∠PLK

∠KJP ≅ ∠JKP

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Which statement correctly names two congruent segments?

JK ≅ MK

PM ≅ PJ

PM ≅ PK

JP ≅ PL

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a triangle is equilateral if and only if it is _____.

equiangular

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each angle of an equilateral triangle measures ___.

60 degrees

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Find the value of each variable.

x = 17, y = 4

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Find the value of each variable.

x = 20, y = 7

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