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Isosceles and Equilateral Triangles
Complete the vocabulary table by filling in the missing information.
Word or Word
Phrase
base
Definition
Picture or Example
The base of an isosceles triangle is
the side included between the pair
of congruent angles.
B
base angles
The base angles are located at the
and are
equiangular
triangle
equilateral
triangle
isosceles
triangle
legs
vertex
An equiangular triangle is a triangle
with three congruent angles. The
angles of an equiangular triangle all
measure 60°.
An equilateral triangle is a triangle
with three congruent sides. The sides
of an equilateral triangle are all the
same length.
The legs are the two congruent sides
of an isosceles triangle.
enVision™ Geometry ⚫ Teaching Resources
A
LB is the vertex.
Å
A
C
