This skill involves naming triangles based on their angles. Triangles are classified as acute if all angles are less than 90 degrees, obtuse if one angle is greater than 90 degrees, and right if one angle is 90 degrees.
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Naming triangles by angles
Test your understanding of naming triangles by angles by practicing it! Work through the below exercises to use it in practice.
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Name these triangles by their angles
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If all the angles are less than 90 degrees, we call that an acute triange. Think of small as cute, so acute is small angles.
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If one of the angles is greater than 90 it's called an obtuse triangle.
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If one of the angles is 90 degrees, that's a right triangle.