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© M. Tallman. 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.

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Presentation on theme: "© M. Tallman. 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."— Presentation transcript:

1 © M. Tallman

2 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.

3 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.

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

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

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

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

8 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

9 © 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

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

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

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

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

14 © 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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