Open Up - Grade 8 - Mathematics - Unit 2 - Lesson 1 - Formative Library | Library

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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.

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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?

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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?

1

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.

1

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?

1

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}.

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Which of these sets of angle measures could be the three angles in a triangle?

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

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

Angle BCD
Angle ECF
Angle DCF

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Open Up - Grade 8 - Mathematics - Unit 2 - Lesson 1

Open Up - Grade 8 - Mathematics - Unit 2 - Lesson 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.

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?

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?

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.

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?

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}.

Which of these sets of angle measures could be the three angles in a triangle?

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

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.

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?

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?

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.

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?

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}.

Which of these sets of angle measures could be the three angles in a triangle?

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

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.

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?

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?

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.

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?

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}.

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

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.

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?

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?

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.

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?

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}.

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