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Published byCarlos Owen Modified over 2 years ago

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© M. Tallman

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All three sides are congruent. 4 inches 4 inches 4 inches All three angles are also congruent, 60°. 60° 60° 60° Note: an equilateral triangle will always have three 60° angles, no matter what the size of the triangle.

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Two sides are congruent. 4 inches 3 inches 4 inches Two angles are congruent. 70° 70° 40° One side has a different length. One angle is different.

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All sides are different lengths. 5.5 inches 7 inches 3 inches All angles are different. 50° 20° 110°

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Has one right angle. 90° Note: It is not possible for a triangle to have more than one right angle.

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All three angles are acute (less than 90°). 50° 60° 70°

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One angle is obtuse (greater than 90 °) ° Note: It is not possible for a triangle to have more than one obtuse angle.

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Equilateral, Isosceles, Scalene, Right, Acute, Obtuse. X° Z° Y° a u n i t s b u n i t s c u n i t s

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© M. Tallman Equilateral, Isosceles, Scalene, Right, Acute, Obtuse. 90° X° Y° a u n i t s b units c u n i t s

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© M. Tallman Equilateral, Isosceles, Scalene, Right, Acute, Obtuse. X° a u n i t s a units a u n i t s

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© M. Tallman Equilateral, Isosceles, Scalene, Right, Acute, Obtuse. X° b u n i t s b u n i t s Y° a units

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© M. Tallman Equilateral, Isosceles, Scalene, Right, Acute, Obtuse. X° a units X° b units

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© M. Tallman Equilateral, Isosceles, Scalene, Right, Acute, Obtuse. Y° a units b units Z° X° c units

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© M. Tallman Equilateral, Isosceles, Scalene, Right, Acute, Obtuse. X° a u n i t s b units Y° a u n i t s X°

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