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A triangle in which exactly one angle is obtuse is called an ___________ triangle.

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Presentation on theme: "A triangle in which exactly one angle is obtuse is called an ___________ triangle."— Presentation transcript:

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2 A triangle in which exactly one angle is obtuse is called an ___________ triangle.

3 An acute triangle has ______ acute angles.

4 A triangle in which exactly two sides are congruent

5 A triangle in which exactly one angle is right

6 A triangle in which all three sides are congruent

7 A triangle in which no two sides are congruent

8 CPCTC stands for…

9 CPCTC is used for…

10 A line segment drawn from any vertex of the triangle to the midpoint of the opposite side.

11 A line segment drawn from any vertex of the triangle to the opposite side and perpendicular to that side.

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13 An altitude lies outside the triangle.

14 An angle bisector can lie outside the triangle.

15 The perimeter of ABC is 20. If AB = x+3, AC = 3x + 2 and BC = 2x + 3, determine if the triangle is isosceles, scalene or equilateral.

16 Given: FH  MJ G is the midpoint of K is the midpoint of  GHJ   KJH Prove: GJ  HK

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18 An angle bisector divides a side of a triangle into two congruent parts.

19 If a triangle is isosceles, then the altitude drawn to the base of the triangle is a median.

20 If a median of a triangle is also an altitude, then it is also an angle bisector.

21 An altitude and a median are the same segment.

22 The longest side of a triangle is opposite the smallest angle.

23 A right triangle is isosceles.

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25 A scalene triangle is isosceles.

26 An equilateral triangle is isosceles.

27 An isosceles triangle is equilateral.

28 An equilateral triangle is equiangular.

29 An isosceles triangle is equiangular.


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