GeoH Ch 4 Review

Front

What is a congruent figure?

Back

Two figures are congruent if they have the same shape and size, meaning one can be transformed into the other through rotations, translations, or reflections without resizing.

Tags

CCSS.8.G.A.2

Front

What is dilation in geometry?

Back

Dilation is a transformation that alters the size of a figure but keeps its shape. It involves a scale factor that determines how much the figure is enlarged or reduced.

Tags

CCSS.8.G.A.3

Front

What does a horizontal stretch transformation do?

Back

A horizontal stretch transformation changes the x-coordinates of a figure by a scale factor, making it wider or narrower without altering the y-coordinates.

Tags

CCSS.HSG.CO.A.2

Front

What is a reflection in geometry?

Back

A reflection is a transformation that flips a figure over a line (the line of reflection), creating a mirror image.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the effect of reflecting a point across the x-axis?

Back

Reflecting a point (x, y) across the x-axis results in the point (x, -y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the effect of reflecting a point across the y-axis?

Back

Reflecting a point (x, y) across the y-axis results in the point (-x, y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is a rotation in geometry?

Back

A rotation is a transformation that turns a figure around a fixed point (the center of rotation) by a certain angle.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What does a 90-degree clockwise rotation do to a point (x, y)?

Back

A 90-degree clockwise rotation transforms the point (x, y) to (y, -x).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What does a 90-degree counterclockwise rotation do to a point (x, y)?

Back

A 90-degree counterclockwise rotation transforms the point (x, y) to (-y, x).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is a translation in geometry?

Back

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

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5