Grade 8 Unit 1 Vocab: Rigid Transformation and Congruence

What does 'clockwise' mean?

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Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What does 'congruent' mean in geometry?

• different size, same shape

• same size, same shape

Tags

CCSS.8.G.A.2

To _______ is to match.

When part of an original figure matches up with part of a copy, we call them corresponding parts.

• rotate

• divide

• subtract

• correspond

Tags

CCSS.8.G.A.2

What does 'counterclockwise' mean?

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• 

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is an 'image' in geometry?

• A new figure that is created after a transformation of an original figure. Also known as the 'copy'.

• The original figure before any transformation.

Tags

CCSS.HSG.CO.A.2

What is the 'origin' on the coordinate plane?

• The point (0, 0) where the x-axis and the y-axis intersect.

• The point (1, 1) where the x-axis and the y-axis intersect.

Tags

CCSS.5.G.A.1

What are parallel lines?

• Lines that never cross or intersect.

• Lines that meet at one point.

• Lines that form a right angle.

• Lines that are curved.

Tags

CCSS.HSG.CO.A.1

What is the name of a figure before any transformations are performed (aka the original image)?

• translation

• image

• pre-image

• reflection

Tags

CCSS.HSG.CO.A.2

What is prime notation used for in geometry (aka prime marks)?

• I'm the original.

• I'm the copy.

Tags

CCSS.8.G.A.2

What is a reflection across a line?

• A reflection across a line flips a figure.

• A reflection across a line rotates a figure.

• A reflection across a line stretches a figure.

• A reflection across a slides a figure.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5