M7.g1-3_T_12/09

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

Front

If two angles in a triangle are 56° and 92°, how do you find the third angle?

Back

Subtract the sum of the two angles from 180°: 180° - (56° + 92°) = 32°.

Front

What does a scale of 1 inch to 400 miles mean?

Back

It means that 1 inch on the map represents 400 actual miles.

Front

If the actual distance is 200 miles, how do you find the distance on a map with a scale of 1 inch to 400 miles?

Back

Divide the actual distance by the scale factor: 200 miles ÷ 400 miles/inch = 0.5 inches.

Front

What is the height of Lindy's model of the Great Pyramid if the actual height is 560 feet and the scale is 1 inch to 10 feet?

Back

560 feet ÷ 10 feet/inch = 56 inches.

Front

How do you convert a scale drawing measurement to actual size?

Back

Multiply the measurement on the drawing by the scale factor.

Front

What is the scale factor if 1/2 inch represents 5 feet?

Back

The scale factor is 5 feet per 0.5 inches, or 10 feet per inch.

Front

If a scale drawing of a room is 3 inches long, what is the actual length if the scale is 1/2 inch to 5 feet?

Back

3 inches × (5 feet / 0.5 inches) = 30 feet.

Front

What is the formula to find the third angle in a triangle?

Back

Third angle = 180° - (first angle + second angle).

Front

How do you determine the width of a bulletin board from a scale drawing?

Back

Use the scale to convert the drawing measurement to actual size.