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Chap 4-5 vocab
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Terms in this set (9)
Isosceles Triangle
A triangle that has 2 equal sides.
Legs (of an isosceles triangle)
The 2 congruent sides that form the vertex angle.
Base (of an isosceles triangle)
The 3rd side of the isosceles triangle
Vertex angle (of an isosceles triangle)
The angle formed by the legs of an isosceles triangle.
Base Angles (of an isosceles triangle)
the 2 angles that share a base of a triangle.
Isosceles Triangle Theorem
If two sides of a triangle are congruent, then the angles opposite those sides are congruent.
Converse of the Isosceles Triangle Theorem
If two angles of a triangle are congruent, then the sides opposite those angles are congruent
Theorem 4-5
If a line bisects the vertex angles of an isosceles triangle, then the line is also the perpendicular bisector of the base.
Corollary to Theorem
If a triangle is equilateral, then the triangle is equiangular.
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