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

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Presentation transcript:

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

An acute triangle has ______ acute angles.

A triangle in which exactly two sides are congruent

A triangle in which exactly one angle is right

A triangle in which all three sides are congruent

A triangle in which no two sides are congruent

CPCTC stands for…

CPCTC is used for…

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

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

An altitude lies outside the triangle.

An angle bisector can lie outside the triangle.

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.

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

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

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

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

An altitude and a median are the same segment.

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

A right triangle is isosceles.

A scalene triangle is isosceles.

An equilateral triangle is isosceles.

An isosceles triangle is equilateral.

An equilateral triangle is equiangular.

An isosceles triangle is equiangular.