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

Tell whether the two figures are similar. Explain your reasoning.

• Yes, similar because they are the same shape and side lengths are proportional.
• No, not similar because they are the same shape, but side lengths are not proportional.
• Yes, same shape
• No, different sizes

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

What is the definition of dilations ,in mathematical terms?

• to make larger or smaller
• to make larger
• all of the above
• to make smaller

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

Enlargement or reduction?  Find the scale factor!

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

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

A figure is multiplied by the scale factor 1/4. What will be the change in perimeter?

• The perimeter will be 1/4 the original perimeter.
• The perimeter will be 1/8 the original perimeter.
• The perimeter will be 1/16 the original perimeter

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

A dilation produces a congruent figure.

• True
• False

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

Are these triangles congruent?

• Yes, by SSS
• Yes, by SAS
• Yes, by AAS
• Yes, by HL

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

Are the triangles congruent?

• Yes
• No

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

Are these triangles congruent?

• Yes, by AAS
• Yes, by SAS
• Yes, by SSS
• No, this is the SSA one!!

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

TEKS.MATH.9-12.III.A.2

If ∆PIG ≅ ∆COW, WO≅?

• GI
• PI
• PG

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

What is Reason C?

• Definition of Congruence

• Definition of Equality

• Definition of Midpoint

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