Unit 1 Retake Study Guide

Fill in the blank for what a scaled copy is.

• A scaled copy is a figure that is an enlargement or reduction of another figure by a scale factor, where the shapes are similar and corresponding angles are equal.

• A scaled copy is a figure that is always larger than the original figure, regardless of the scale factor.

• A scaled copy is a figure that has the same area as the original but different angles.

• A scaled copy is a figure that is only a translation of the original figure, with no change in size.

Fill in the blank for what a scale factor is.

• A scale factor is the ratio of any two corresponding lengths in two similar geometric figures.

• A scale factor is the sum of the angles in a triangle.

• A scale factor is the difference between the areas of two circles.

• A scale factor is the product of the sides of a rectangle.

Do you agree with Tyler?

Tyler states that Figure B is a scaled copy of Figure A because all the peaks are half as tall.

• Yes

• No

A blueprint for a building includes a rectangular room measuring 3 inches long by 5.5 inches wide. The scale on the blueprint says 1 inch on the drawing is 10 feet in actual. What are the dimensions of the room in the actual building?

• 50 ft by 15 ft

• 15 ft by 10 ft

• 30 ft by 10 ft

• 30 ft by 55 ft

What is the scale factor from Polygon A to Polygon B?

• 1/2

• 2

• 3

• 4

Polygon B is a scaled copy of Polygon A. Find the missing length of each side marked with ? in Polygon B.

• The missing length is 4 units.

• The missing length is 6 units.

• The missing length is 5 units.

• The missing length is 10 units.

Determine the measure of the bottom angle marked with ? in Polygon A.

• 82°

• 53°

• 164°

• 106°

Determine the measure of the top angle marked with ? in Polygon A.

• 82°

• 53°

• 164°

• 86°

Create a scaled copy of ABCD using a scale factor of 3.

Triangle S and Triangle L are scaled copies of one another. What is the scale factor from S to L?

• The scale factor from S to L is 2.

• The scale factor from S to L is 1/2.

• The scale factor from S to L is 3.

• The scale factor from S to L is 4.