isosceles triangles
TRANSCRIPT
Properties of Isosceles Triangles
Objectives:
Discover a relationship between the base angles of an
isosceles triangle.
Isosceles Triangle – at least two sides have the same length
equilateral triangle:isosceles triangle with all three sides are congruent
Parts of Isosceles Triangle:vertex angle – between two sides
Parts of Isosceles Triangle:base angles – angles
opposite sides
Parts of Isosceles Triangle:base – side opposite vertex
Name each part of the isosceles triangle below.
Name each part of the isosceles triangle below.
Name each part of the isosceles triangle below.
Isosceles Triangle Theorem
If a triangle is isosceles, then _______________________.base angles are congruent
Converse of Isosceles Triangle:
If a triangle has two congruent angles, it is an isosceles triangle.
Equilateral Triangle:
An equilateral triangle is equiangular and an equiangular triangle is equilateral.
Find the missing angle measures.
ma =
mb=
Find the missing angle measures.
mc =
md=
Find the missing angle measures.
me =
mf =
mg =