Triangle Properties and Area

6.8 Triangle Properties and Area

Triangle Properties- Classify Triangles

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Multiple Choice

Each lapel on a suit jacket is in the shape of a triangle. The tree angles of each triangle measure 47°. 68° and 65°. What type of triangle is this based on its angles?

• Right Triangle

• Obtuse Triangle

• Acute Triangle

Multiple Choice

A naval distress signal flag is in the shape of a triangle. The three sides of the triangle measure 5 feet, 9 feet, and 9 feet. Classify the triangle by its sides.

• Isosceles Triangle

• Equilateral Triangle

• Scalene Triangle

Triangle Angle Sum

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Multiple Choice

A triangle has one angle that measure 81° and one that measures 37°. What is the measure of the third angle?

• 118°

• 180°

• 62°

• 360°

Multiple Choice

A student is trying to construct triangles using four different sets of angles. The angles in each set are given below . Which set will form a triangle?

• 150°, 110°, 100°

• 50°, 50° , 50°

• 45°, 65°, 70°

• 90°, 90° , 90°

Triangle Inequality Theorem

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Multiple Choice

Determine if the side lengths given form a triangle.

** Hint: Put them in order from least to greatest.**

2 yd, 7 yd, 8yd

• yes

• no

Multiple Choice

Determine if the side lengths given form a triangle.

** Hint: Put them in order from least to greatest.**

6m, 11m, 6m

• yes

• no

Multiple Choice

Determine if the side lengths given form a triangle.

** Hint: Put them in order from least to greatest.**

3ft, 7ft, 13ft

• yes

• no

Multiple Choice

Which of these lengths can represent the sides of a triangle?

• 7,9,19

• 7, 7, 7

• 7, 12,1

• 7, 7, 16

Review- Area

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Multiple Choice

A ceramic tile is cut in the shape of a triangle. The triangle has a height of 6 inches and an area of 33 square inches. What is the length of the base of the triangle?

• 11in

• 5.5 in

• 99 in

• 16.5 in

Multiple Choice

A trapezoid has an area of 96 square feet. The bases are 9 feet and 15 feet. Write an equation to determine the height of of the trapezoid. Then determine the height.

• 72 ft.

• 24 ft.

• 4ft.

• 8 ft.

Multiple Choice

What is the height of a parallelogram with base 12 meters and an area of 60 square meters?

• 48 m

• 720 m

• 5 m

• 72 m