Similar Figures/Corresponding Parts/Scale Factor

Are the following similar? Why or why not?

• Yes. The ratios of the corresponding sides are equal.

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

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

Tell whether the two figures are similar. Explain your reasoning.

• Yes, similar because they are the same shape and side lengths are proportional.
• No, not similar because they are the same shape, but side lengths are not proportional.
• Yes, same shape
• No, different sizes

Tags

CCSS.HSG.SRT.A.2

CCSS.HSG.SRT.A.3

Are the following similar? Why or why not?

• Yes. All pairs of corresponding angles are congruent and the sides are proportional.

• No, the corresponding angles are not equal.

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

Tags

CCSS.HSG.SRT.A.2

CCSS.HSG.SRT.A.3

What is the scale factor from the triangle to the left to the triangle on the right?

• 2

• 3/2

• 2/3

• 1/2

What is the scale factor from ΔDEF to ΔABC?

• 1/2
• 7/3
• 2
• 10/3

Tags

CCSS.7.G.A.1

What is the scale factor from ABCD to MNOP?

• 2/3
• 3/2
• 2
• 3

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

Matching angles are called

• Corresponding Sides
• Corresponding Angles
• The Same
• Congruent Angles

Tags

CCSS.HSG.CO.C.9

Matching sides are called

• Corresponding Sides
• Corresponding Angles
• The Same
• Congruent Sides

Tags

CCSS.HSG.CO.B.6

CCSS.HSG.CO.B.7

CCSS.HSG.CO.B.8

CCSS.HSG.SRT.B.5

All angles in similar figures are congruent.  

• True
• False

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Two objects that are the same shape but not the same size are _______.

• Congruent
• Vertical
• Similar
• Complementary 

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6