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3:02
YouTube
CK-12 Foundation
Isosceles Triangles: Lesson (Basic Geometry Concepts)
Discover more at www.ck12.org: http://www.ck12.org/geometry/Isosceles-Triangles/ Here you'll learn the definition of an isosceles triangle as well as two theorems about isosceles triangles: 1) The angle bisector of the vertex is the perpendicular bisector of the base; and 2) The base angles are congruent. This video provides the student with a ...
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