Chapter 7 Quiz -8b

15 Questions | Total Attempts: 55

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Chapter 7 Quiz -8b


Questions and Answers
  • 1. 
    Selena is painting an image on a piece of art canvas. The image she is reproducing is 4 inches by 6 inches. She enlarges the dimensions 3 times. Which of the following statements is NOT true?
    • A. 

      The perimeter of the original image and the perimeter of the new image are related by a scale factor of 3.

    • B. 

      The perimeter of the original image is 1/3 the perimeter of the new image.

    • C. 

      The area of the new image is 3 times the size of the original image. 

    • D. 

      The area of the original image and the area of the new image are related by a scale factor of 9.

  • 2. 
    Bill is 72 inches tall and casts a 60 inch shadow. His son, who is standing next to him, casts a 50 inch shadow. How tall is his son?
    • A. 

      60 in.

    • B. 

      86 in.

    • C. 

      68 in.

    • D. 

      41.7 in.

  • 3. 
    Which of the following statements is not true if triangle JKL is congruent to triangle RST?
    • A. 

      JK ≅ RS

    • B. 

      KL ≅ ST

    • C. 

      ∠K ≅ ∠T

    • D. 

      ∠J ≅ ∠R

  • 4. 
    Write a proportion comparing the rise to the run for each of the similar slope triangles and find the numeric value.
    • A. 

      -1/2

    • B. 

      1/2

    • C. 

      2

    • D. 

      -2

  • 5. 
    Determine whether the triangles are similar. If not, explain why not.
    • A. 

      No, a = 30

    • B. 

      Yes

    • C. 

      No, b = 110

    • D. 

      No, b = 40

  • 6. 
    The two triangles shown in the figure are similar. Find the distance d across the river.
    • A. 

      16 m.

    • B. 

      81 m.

    • C. 

      18 m.

    • D. 

      25 m.

  • 7. 
    Write a proportion comparing the rise to the run for each of the similar slope triangles and find the numeric value.
    • A. 

      1/2

    • B. 

      2

    • C. 

      -1/2

    • D. 

      -2

  • 8. 
    The figures shown are similar. Find the perimeter of the second figure.
    • A. 

      25.2 mm

    • B. 

      14.6 mm

    • C. 

      16.8 mm

    • D. 

      10.8 mm

  • 9. 
    A lakefront building that is 40 feet high casts a shadow on the water. How long is that shadow if a 18-foot high truck parked nearby casts an 9-foot shadow?
    • A. 

      14 ft.

    • B. 

      18 ft.

    • C. 

      17 ft.

    • D. 

      20 ft.

  • 10. 
    Find the value of x in the similar polygons below.
    • A. 

      15 ft.

    • B. 

      6 ft.

    • C. 

      3 ft.

    • D. 

      9 ft.

  • 11. 
    Triangle ABC ~ DEF. Each side of Δ ABC is 3/2 times longer than the corresponding sides of Δ DEF. If the perimeter of Δ ABC is 36 centimeters, what is the perimeter of Δ DEF?
    • A. 

      54 cm

    • B. 

      12 cm

    • C. 

      24 cm

    • D. 

      72 cm

  • 12. 
    Which pair of polygons is not similar?
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

  • 13. 
    Determine if the two figures are similar by using transformations.
    • A. 

      Similar; a reflection and a dilation map one figure onto the other.

    • B. 

      The figures are not similar.

    • C. 

      Similar; a translation and a dilation map one figure onto the other.

    • D. 

      Similar; a rotation and a dilation map one figure onto the other.

  • 14. 
    Determine if the two figures are similar by using transformations.
    • A. 

      Similar; a reflection and a dilation map one figure onto the other.

    • B. 

      Similar; a rotation and a dilation map one figure onto the other.

    • C. 

      The figures are not similar.

    • D. 

      Similar; a translation and a dilation map one figure onto the other.

  • 15. 
    Two rectangles are similar. The length and width of the first rectangle is 3 meters by 5 meters. The second rectangle is similar by a scale factor 4. What is the area of the second rectangle?
    • A. 

      60 m2

    • B. 

      240 m2

    • C. 

      64 m2

    • D. 

      256 m2

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