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8.2.1 Practice

Last updated over 1 year ago

8 questions

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Question 1

1.

Rectangle A measures 12 cm by 3 cm. Rectangle B is a scaled copy of Rectangle A.

Select all of the measurement pairs that could be the dimensions of Rectangle B.

6 cm by 1.5 cm

10 cm by 2 cm

13 cm by 4 cm

18 cm by 4.5 cm

80 cm by 20 cm

Question 2

2.

Rectangle A has length 12 and width 8. Rectangle B has length 15 and width 10. Rectangle C has length 30 and width 15.

Is Rectangle A a scaled copy of Rectangle B?

Yes, they are scaled copies.

No, they are not scaled copies.

Question 3

3.

Rectangle A has length 12 and width 8. Rectangle B has length 15 and width 10. Rectangle C has length 30 and width 15.

Is Rectangle B a scaled copy of Rectangle A?

Yes, they are scaled copies.

No, they are not scaled copies.

Question 4

4.

Rectangle A has length 12 and width 8. Rectangle B has length 15 and width 10. Rectangle C has length 30 and width 15.

Explain how you know that Rectangle C is not a scaled copy of Rectangle B.

Question 5

5.

Rectangle A has length 12 and width 8. Rectangle B has length 15 and width 10. Rectangle C has length 30 and width 15.

Is Rectangle A a scaled copy of Rectangle C?

Yes, they are scaled copies.

No, they are not scaled copies.

Question 6

6.

Here are three polygons.
Draw a scaled copy of Polygon A with scale factor \frac{1}{2} .
Draw a scaled copy of Polygon A with scale factor 2.
Draw a scaled copy of Polygon A with scale factor \frac{1}{4}.

Question 7

7.

Which of these sets of angle measures could be the three angles in a triangle? Hint- all interior angles of a triangle must add up to 180 degrees

40, 50, 60

50, 60, 70

60, 70, 80

70, 80, 90

Question 8

8.

In the picture lines AB and CD are parallel. Find the measures of the following angles.
(Only one measurement per angle)

38 degrees
34 degrees
142 degrees
145 degrees
160 degrees
45 degrees

Angle BCD
Angle ECF
Angle DCF