CP Geo Unit 5 Review

Front

What is a translation in geometry?

Back

A translation is a transformation that moves every point of a figure the same distance in the same direction.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

How do you reflect a point over the y-axis?

Back

To reflect a point (x, y) over the y-axis, change the sign of the x-coordinate to get (-x, y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the result of reflecting the point (2, -4) over the y-axis?

Back

The result is (-2, -4).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What happens to the coordinates of a point when it is reflected over the y-axis?

Back

The x-coordinate changes sign, while the y-coordinate remains the same.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is dilation in geometry?

Back

Dilation is a transformation that changes the size of a figure but not its shape, using a scale factor.

Tags

CCSS.8.G.A.3

Front

If a point (x, y) is dilated with a scale factor k, what are the new coordinates?

Back

The new coordinates are (kx, ky).

Tags

CCSS.8.G.A.3

Front

What is the effect of a dilation with a scale factor of 1/2 on the point (-10, -6)?

Back

The new coordinates are (-5, -3).

Tags

CCSS.8.G.A.3

Front

How do you translate a point in the coordinate plane?

Back

To translate a point (x, y), add the translation values to the coordinates: (x + a, y + b), where a is the horizontal shift and b is the vertical shift.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the translation of triangle ABC to triangle A'B'C' if it moves left two and up nine?

Back

The translation can be expressed as: (x, y) -> (x - 2, y + 9).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is a reflection in geometry?

Back

A reflection is a transformation that flips a figure over a line, creating a mirror image.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5