Exploring Basic Geometric Transformations

Mr. Robinson introduces a video on basic 2D transformations, covering translation, reflection, rotation, and dilation. He explains congruent transformations, where size and shape remain unchanged, and similar transformations, focusing on dilation, where objects grow or shrink proportionally. The video includes examples and visual aids to help students understand these concepts.

What does a congruent transformation imply about an object's size and shape?

• The object's shape changes but the size remains the same.

• The object's size increases but the shape remains the same.

• The object's size and shape remain unchanged.

• The object's size and shape are altered.

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CCSS.8.G.A.2

CCSS.HSG.CO.B.6

In a translation, how does the orientation of an object change?

• It rotates around the origin.

• It flips over an axis.

• It remains the same.

• It increases in size.

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CCSS.8.G.A.3

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During a translation, how do you describe the movement of an object?

• It spins around a central point.

• It expands or contracts.

• It mirrors across an axis.

• It shifts position without rotating or flipping.

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CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the result of reflecting an object across the x-axis?

• The object moves to the right.

• The object flips upside down.

• The object rotates 90 degrees.

• The object becomes larger.

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CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What defines a reflection in geometric transformations?

• The object changes color.

• The object creates a mirror image across an axis.

• The object moves up or down.

• The object rotates around a point.

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CCSS.8.G.A.3

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What happens to an object rotated 180 degrees around the origin?

• It remains unchanged.

• It flips upside down.

• It moves to a new position without rotating.

• It doubles in size.

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CCSS.8.G.A.3

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In a rotation, how does the distance of a point from the center change?

• It becomes zero.

• It remains constant.

• It decreases.

• It increases.

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CCSS.8.G.A.3

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How does a dilation with a scale factor greater than 1 affect an object?

• It enlarges the object.

• It rotates the object.

• It makes the object smaller.

• It moves the object without changing its size.

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CCSS.8.G.A.3

What is the effect of a scale factor of 1/2 in a dilation?

• The object rotates 180 degrees.

• The object's shape changes.

• The object's size is halved.

• The object moves to the left.

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CCSS.8.G.A.3

What is the primary characteristic of similar transformations?

• They change an object's orientation but not its size.

• They change an object's size but maintain its shape.

• They make an object's size and shape completely different.

• They do not change an object's size or shape.

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CCSS.8.G.A.4

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