The World Of Triangles Triangles n A triangle

Triangles n A triangle is a 3 sided polygon. Every triangle has three sides

Acute Triangles n A triangle in which all three angles are less than 90°.

Obtuse Triangles n An obtuse triangle is a triangle in which one of the

Right Triangles n A right triangle is triangle with an angle of 90°.

Scalene Triangles n A triangle with three unequal sides.

Isosceles Triangles n An isosceles triangle is a triangle with (at least) two equal

Isosceles Triangle Theorem n The following movie shows that if two sides of a

Equilateral Triangles n An equilateral triangle is a triangle with all three sides of

Equiangular Triangles n An equiangular triangle is a triangle which has three equal angles.

Congruent Triangles n n Congruent triangles are triangles whose corresponding angles and sides are

The Hypotenuse n The hypotenuse of a right triangle is the triangle's longest side,

The Pythagorean Theorem n For a right triangle with legs a and b and

Triangle Quiz n Please complete the following quiz that covers the information that was

Question 1 n If a triangle has three unequal sides it is a ______

Question 2 n A triangle which has three equal angles is a ______ triangle.

Question 3 n A triangle with (at least) two equal sides is a ______

Question 4 n Two triangles that are equal are called ______ triangles ¡ ¡

Question 5 n A triangle with all three sides of equal length is a

Question 6 n A triangle with an angle of 90° is a ______ triangle.

Question 7 n A triangle in which all three angles are less than 90°

Question 8 n A triangle in which one of the angles is greater than

Question 9 n What is the Hypotenuse of a right triangle? ¡ ¡ ¡

Question 10 n The Pythagorean Theorem states … ¡ ¡ ¡ A) pr 2

Question 11 n Use the Pythagorean Theorem to solve the following: ¡ ¡ ¡

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The World Of Triangles

Triangles n A triangle is a 3 sided polygon. Every triangle has three sides and three angles. When added together, the three angles equal 180°.

Acute Triangles n A triangle in which all three angles are less than 90°.

Obtuse Triangles n An obtuse triangle is a triangle in which one of the angles is greater than 90°.

Right Triangles n A right triangle is triangle with an angle of 90°.

Scalene Triangles n A triangle with three unequal sides.

Isosceles Triangles n An isosceles triangle is a triangle with (at least) two equal sides.

Isosceles Triangle Theorem n The following movie shows that if two sides of a triangle are congruent, then the angles opposite those sides are congruent.

Equilateral Triangles n An equilateral triangle is a triangle with all three sides of equal length.

Equiangular Triangles n An equiangular triangle is a triangle which has three equal angles.

Congruent Triangles n n Congruent triangles are triangles whose corresponding angles and sides are congruent. They are exactly the same size and shape.

The Hypotenuse n The hypotenuse of a right triangle is the triangle's longest side, i. e. , the side opposite the right angle.

The Pythagorean Theorem n For a right triangle with legs a and b and hypotenuse c, a 2+b 2=c 2.

Triangle Quiz n Please complete the following quiz that covers the information that was just presented to you.

Question 1 n If a triangle has three unequal sides it is a ______ triangle. ¡ ¡ ¡ A) Scalene B) Obtuse C) Isosceles n Answer: ¡ A) Scalene

Question 2 n A triangle which has three equal angles is a ______ triangle. ¡ ¡ ¡ A) Acute B) Equilateral C) Equiangular n Answer: ¡ C) Equiangular

Question 3 n A triangle with (at least) two equal sides is a ______ triangle. ¡ ¡ ¡ A) Scalene B) Isosceles C) Congruent n Answer: ¡ B) Isosceles

Question 4 n Two triangles that are equal are called ______ triangles ¡ ¡ ¡ A) Acute B) Obtuse C) Congruent n Answer: ¡ C) Congruent

Question 5 n A triangle with all three sides of equal length is a ______ triangle. ¡ ¡ ¡ A) Equilateral B) Right C) Equiangular n Answer: ¡ A) Equilateral

Question 6 n A triangle with an angle of 90° is a ______ triangle. ¡ ¡ ¡ A) Acute B) Right C) Congruent n Answer: ¡ B) Right

Question 7 n A triangle in which all three angles are less than 90° is a ______ triangle. ¡ ¡ ¡ A) Right B) Acute C) Scalene n Answer: ¡ B) Acute

Question 8 n A triangle in which one of the angles is greater than 90° is a ______ triangle. ¡ ¡ ¡ A) Obtuse B) Isosceles C) Acute n Answer: ¡ A) Obtuse

Question 9 n What is the Hypotenuse of a right triangle? ¡ ¡ ¡ A) The smallest angle. B) The side opposite the right angle. C) The right angle. n Answer: ¡ B) The side opposite the right angle.

Question 10 n The Pythagorean Theorem states … ¡ ¡ ¡ A) pr 2 B) (a+b)2/2=c C) a 2+b 2=c 2 n Answer: ¡ C) a 2+b 2=c 2

Question 11 n Use the Pythagorean Theorem to solve the following: ¡ ¡ ¡ a = 5 b = 12 c = ? n Answer: ¡ c = 13

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