Similarity

Determine whether each pair of ratios forms a proportion

• Proportion

• Not a Proportion

Solve the proportion:

• 4
• 8
• 14
• 10

Solve for x (Remember to distribute for these types of questions!)

• 1/2

• 25/8

• 11

• 53/4

Solve the proportion

• x = 3
• x = -3
• x = 1
• x = -1

Pam drew a scale drawing of a game room. She used the scale 1 inch : 2 feet. If the air hockey table is 5 inches in the drawing, how long is the actual air hockey table?

• 10 Feet

• 2.5 Feet

• 5 Feet

• 15 Feet

Desmond measured a city park and made a scale drawing. The scale he used was 1 centimeter : 9 meters. The actual width of the soccer field is 54 meters. How wide is the field in the drawing?

• 6 cm

• 486 cm

• 9 cm

• 54 cm

All angles in similar figures are congruent.  

• True
• False

What is the scale factor from ΔDEF to ΔABC?

• 1/2

• 7/3

• 2

• 10/3

The two rectangles are scale drawings. What is the measurement of x?

• 21
• 1.25
• 20
• 4

Find the perimeter of the large triangle.

• 24
• 36
• 12
• 54