TEKS.MATH.7.5A

Dilate the figure by a scale factor of 3 with the origin as the center of dilation. What are the coordinates of the image?
A(3,3) B(6,6) C(9,3)

• A'(9,9) B'(18,18) C'(27,9)
• A'(6,6) B'(9,9) C'(12,6)
• A'(0,0) B'(3,3) C'(6,0)
• A'(1,1) B'(2,2) C'(3,1)

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TEKS.MATH.7.5A

A tree is 12 feet tall and casts a shadow 9 feet long. A building nearby casts a shadow that measures 24 feet. How tall is the building? (Draw a picture, set up a proportion)

• 24 feet
• 21 feet
• 27 feet
• 32 feet

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TEKS.MATH.7.5A

The pair of figures is similar. Find the missing side.

• x = 12
• x = 3
• x = 40
• x = 4

Tags

TEKS.MATH.7.5A

TEKS.MATH.7.5C

The pair of figures is similar. Find the missing side.

• x = 12
• x = 3
• x = 40
• x = 4

Tags

TEKS.MATH.7.5A

TEKS.MATH.7.5C

The __________ is the ratio of a length of the image to the corresponding length on the original figure.

• reduction
• enlargement
• scale factor
• center of dilation

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TEKS.MATH.7.5A

Enlargement or reduction?  Find the scale factor!

• It's a reduction; the scale factor is 2.
• It's an enlargement; the scale factor is 2.
• It's an enlargement; the scale factor is 1/2.
• It's a reduction; the scale factor is 1/2.

Tags

TEKS.MATH.7.5A

TEKS.MATH.7.5C

If the scale factor is less than one, the new figure will be

• an enlargement
• a reduction
• a scale factor
• bigger

Tags

TEKS.MATH.7.5A

TEKS.MATH.7.5C

TEKS.MATH.9-12.III.B.3

What is the scale factor from ΔDEF to ΔABC?

• 1/2
• 7/3
• 2
• 10/3

Tags

TEKS.MATH.7.5A

TEKS.MATH.7.5C

TEKS.MATH.9-12.III.B.3

What is the scale factor from ΔDEF to ΔABC?

• 1/2
• 7/3
• 2
• 10/3

Tags

TEKS.MATH.7.5A

TEKS.MATH.7.5C

All angles in similar figures are congruent.  

• True
• False

Tags

TEKS.MATH.7.5A