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Transcript 
Triangles are classified
by the measurement of
their sides.
An Equilateral triangle
has all congruent sides.
4 cm
4 cm
4 cm
An Isosceles triangle has
at least two congruent
sides.
2 cm
2 cm
6 cm
6 cm
2 cm
4 cm
A Scalene triangle has
no congruent sides.
8 cm
1 cm
5 cm
7 cm
2 cm
9 cm
Triangles are also classified
by the measurement of their
angles. The sum of all the
angles in one triangle equals
180°.
90° + 45° + 45° = 180 °
45°
45°
A Right triangle has one
right angle.
An Acute triangle has all
angles less than 90°.
50°
70°
60°
An Obtuse triangle has
one angle greater than 90°.
30°
30°
120°
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