Math Similar Figures

Triangle ABC and XYZ are similar.  Use your knowledge of scale factor to find the length of X.

• 20

• 25

• 100

• 40

figures with the same shape but not necessarily the same size

• similar

• linear

• circular

In similar figures, the lengths of corresponding sides are proportional.

• Always true

• Sometimes true

• Never true

The two parallelograms above are similar.
What is the length in inches of line segment PQ?

• 40 in.

• 34 in.

• 38 in.

• 14 in.

Q1. What is the total number of students?

• A) 74

• B) 100

• C) 104

• D) 108

Matching sides are called

• Corresponding Sides

• Corresponding Angles

• The Same

• Congruent Sides

What is the corresponding side to line segment AC?

• Line Segment CB

• Line Segment AB

• Line Segment XZ

• Line Segment ZY

Sides in similar figures must be proportional.  

• True

• False 

Similar figures have the same general shape.

• Always true

• Sometimes true

• Never true

Are the following similar? Why or why not?

• Yes

• No, the corresponding angles are not equal.

• No, the ratios of the corresponding sides are not equal.