OST - Chapter 7 - Proportions and Similarity

ABC ~ JKL. What is the length of side JL? (round to closest tenth as needed)

Megan dilates triangle JKL about point J by a scale factor of 3/5 to create triangle JNO. What is the length of side NO? (round to nearest inch)

Megan dilates triangle JKL about point J by a scale factor of 3/5 to create triangle JNO. What is the measure of angle O? (round to nearest degree)

What is the missing statement in line 2?

• JL is perpendicular to LM
• KN is perpendicular to LM
• JL is parallel to LM
• KN is parallel to LM

What is the perimeter of of triangle PRT? (to the nearest whole meter)

Which pair of triangles is similar?

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A park has a triangular sandbox. Todd wants to create a smaller sandbox at his backyard having the same angles as the park sandbox. Drawings of the sandboxes are shown. What is the perimeter, in feet (ft), of Todd’s sandbox? (enter answer to the nearest tenth of a foot)

Rectangles are

• always similar
• sometimes similar
• never similar

Line segment AC has endpoint A(-1, -3.5) and C(5, -1). Point B is on line segment AC and is located at (0.2, -3). What is the ratio of AB/BC? (type answer as a reduced fraction)

Which triangle must be similar to triangle XYZ?

• a triangle with two angles that measure 40 degrees
• a triangle with angles that measure 40 and 60 degrees
• a scalene triangle with only one angle that measures 100 degrees
• an isosceles triangle with only one angle that measures 40 degrees