A triangle is a 3 sided geometric shape.
The sum of the 3 angles in the triangle add up to 180 degrees.
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Categories Based on Sides
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Feature(s)
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equilateral
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all 3 sides equal, with 3 equal angles
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isosceles
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2 sides equal, with 2 equal angles
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scalene
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no sides and no angles equal
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Categories Based on Angles
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Feature(s)
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right
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one angle 90°
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obtuse
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one angle > 90°
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acute
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all angles less than 90°
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Other
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Feature(s)
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right isosceles
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one angle 90°, two sides equals
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