Unit 3 Part B Mastery Review

Which scale factor has been applied to the smaller triangle (first triangle) to produce the larger triangle (second triangle)?

• Scale Factor: 2

• Scale Factor: 1/2

• Scale Factor: 8

• Scale Factor: 3

If a scale factor of 2 is applied to Figure A (top triangle), which of these would be a corresponding side length on the new triangle (bottom triangle)?

• 20

• 10

• 12

• 16

Triangle ABC  is similar to triangle FGH. 

Which proportion can be used to solve for x?

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What is the length of the actual pool? 

• 4.75 feet

• 28 feet

• 65 feet

• 76 feet

A rectangle is shown. If the rectangle is scaled by 4.5, what is the perimeter of the new rectangle?

• 28 units

• 54 units

• 108 units

• 546.75 units

Which statement is true regarding the slope of AC and CE?

• The slope of AC is LESS THAN the slope of CE because the ratio of the change in y-values of the endpoints to the change in x-values of the endpoints is LESS for AC than for CE.

• The slope of AC is GREATER THAN the slope of CE because the ratio of the change in y-values of the endpoints to the change in x-values of the endpoints is GREATER for AC than for CE.

• The slope of AC is EQUAL THAN the slope of CE because the ratio of the change in y-values of the endpoints to the change in x-values of the endpoints is EQUAL for AC than for CE.

• The relationship between the slope of AC and the slope of CE cannot be determined because the triangles are congruent.

Triangle ABC is similar to triangle DEF. Which statement is true concerning the slope of the line formed by the hypotenuse of each triangle?

• The slope of both triangles equals -1

• The slope of both triangles equals 1

• The slope of both triangles equals 2/3

• The slope of both triangles equals 3/2

Which of the following shows an UNDEFINED SLOPE?

• graph 1

• graph 2

• graph 3

• none of the above

Sara works 40 hours per week and earns $660. Which graph shows the unit rate for this situation?

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Using the similar triangles, which equation could be used to find the slope of the ORANGE LINE?

• slope= x/y

• slope= y/5

• slope= 3/5

• slope= 5/3