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HG U3D10 Unit 3 Review Sept16

Last updated about 1 year ago

16 Nsɛmmisa

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Click on the link and complete the transformations.

https://www.geogebra.org/m/sjuvxxrn

How many can you get correct?

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1.

What is symmetry?

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Click on the link to explore rotational symmetry.

https://www.geogebra.org/m/kzxfjmyu

What is rotational symmetry?

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Asemmisa {{asɛmmisaAhyɛnsode}}

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What is rotational symmetry?

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Click on the link to see if the triangles will stay congruent.

https://www.geogebra.org/m/mpezgxvj

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Click on the link for 2 more to explore.

Move parts around to see if the triangles will remain congruent.

https://www.geogebra.org/m/rq9x6xmc

Asemmisa {{asɛmmisaAhyɛnsode}}

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7.

Would you use SSS or SAS to prove the triangles congruent?

SAS; three pairs of corresponding sides are congruent.

SAS; two pairs of corresponding sides and their included angles are congruent.

SSS; two pairs of corresponding sides and their included angles are congruent.

SSS; three pairs of corresponding sides are congruent.

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8.

Which two triangles are congruent by ASA? Explain.

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9.

Does the transformation appear to be a rigid motion? Explain.

No, the two figures appear to be similar but not congruent so the transformation must not be a rigid motion.

Yes, the two figures are titled image and preimage so the transformation must be a rigid motion.

Yes, the two figures appear to be congruent so the transformation seems to be a rigid motion.

Yes, the the image is a reflection of the pre-image and a reflection is a rigid motion.

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10.

What are the vertices of the transformation?
Select all that apply.

C'(-5, 1)

A'(-1, -2)

B'(-1, -3)

B'(2, -3)

A'(1, -4)

C'(1, -5)

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12.

(-1,4)

(3,-4)

(-3,4)

(3,-2)

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13.

(-4,-3)

(-4,3)

(4.3)

(4,-3)

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14.

The point (3, 2) is rotated counterclockwise about the origin. The point (x₁, y₁) is the result of a 90° rotation. What are the coordinates of (x₁, y₁)?

(-2,3)

(3,-2)

(-3,-2)

(2,-3)

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16.

△BIG has vertices B(-4, 2), I(0, -3), and G(1, 0).
Graph △BIG and its reflection, △B'I'G', across the y-axis.
Then graph △B"I"G", after a translating △B'I'G' (x + 3, y - 1).
Finally, rotate △B"I"G" ninety degrees clockwise around the origin to graph △B'"I'"G'".
Label all vertices.