Thursday, May 5, 2011

classifying triangles

Today in math we learned about triangles. You classify triangles by the lengths of their sides.

Equilateral triangle = has three sides of the same length.
Scalene triangle = has no sides of the same length.
Isosceles triangle = has two sides of the same length.

You classify triangles by the measures of their angles.

Acute triangle = has three acute angles ( less then 90 degrees).
Right triangle = has one right angle (90 degrees).
Obtuse triangle = has one abuse angle ( more than 90 degrees).

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