Exploring Adding and Subtracting Rational Expressions

What is the defining characteristic of similar polygons?

• They have different shapes and sizes.

• Their corresponding sides are congruent.

• Their corresponding angles are congruent and sides are proportional.

• They have the same size but different shapes.

What is the scale factor of triangle ABC to triangle DEF if AB = 8 and DE = 12?

• 3/2

• 2/3

• 4/3

• 3/4

If the scale factor of triangle DEF to triangle ABC is 3/2, what is the ratio of their perimeters?

• 4/3

• 1/1

• 3/2

• 2/3

What symbol is used to denote similarity in geometry?

• ≈

• =

• ~

• ≠

In a similarity statement, what must match between the two figures?

• Both corresponding angles and sides

• Neither angles nor sides

• Only the angles

• Only the sides

If two triangles are similar and the scale factor is 2/3, what is the length of the corresponding side in the second triangle if the first triangle's side is 42?

• 21

• 84

• 63

• 28

Given a scale factor of 6/5, if one side of a polygon is 28, what is the corresponding side length in the similar polygon?

• 25

• 35

• 30

• 33.6

If triangle ABC is similar to triangle DEF and AB = 25, DE = 20, and BC = 28, what is the length of EF?

• 20

• 25

• 30

• 35

If PQRS is similar to WXYZ and PS = 75, WX = 40, and RS = 32, what is the length of YZ?

• 55

• 45

• 50

• 60

If triangle DEF is similar to triangle HJG and DE = 9, JH = 15, and EF = 12, what is the length of GH?

• 18

• 14

• 16

• 20