Transformations - 8th Grade

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 translate a point (x, y) right by a units and up by b units?

Back

The new coordinates will be (x + a, y + b).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the rule for translating a point left by 3 units and down by 2 units?

Back

The rule is (x - 3, y - 2).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What happens to the coordinates of a point when it is reflected across the x-axis?

Back

The y-coordinate changes sign, resulting in (x, -y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

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

Back

The x-coordinate changes sign, resulting in (-x, y).

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 by a scale factor of k, what are the new coordinates?

Back

The new coordinates will be (kx, ky).

Tags

CCSS.8.G.A.3

Front

What is the scale factor if a point is moved from (2, 3) to (6, 9)?

Back

The scale factor is 3.

Tags

CCSS.7.G.A.1

Front

How do you find the center of dilation?

Back

The center of dilation is the point from which the figure is enlarged or reduced.

Tags

CCSS.8.G.A.3

Front

What is the effect of a scale factor less than 1 on a figure?

Back

A scale factor less than 1 reduces the size of the figure.

Tags

CCSS.8.G.A.3