Informal Geometry Transformations Test

Front

What is a transformation in geometry?

Back

A transformation in geometry is an operation that moves or changes a shape in some way, including translations, rotations, reflections, and dilations.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

Define translation in geometry.

Back

Translation is a transformation that moves every point of a shape the same distance in the same direction.

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 shape around a fixed point, known as the center of rotation, by a certain angle.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

Explain reflection in geometry.

Back

Reflection is a transformation that flips a shape over a line, creating a mirror image of the original shape.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is a line of reflection?

Back

A line of reflection is the line over which a shape is reflected to create a mirror image.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What does it mean for a transformation to be a dilation?

Back

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

Tags

CCSS.8.G.A.3

Front

What is the difference between enlargement and reduction in dilations?

Back

Enlargement increases the size of a shape (scale factor > 1), while reduction decreases the size of a shape (scale factor < 1).

Tags

CCSS.8.G.A.3

Front

How do you determine if a line is a line of reflection?

Back

To determine if a line is a line of reflection, check if each point on the shape is equidistant from the line and that the corresponding points are perpendicular to the line.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the x-axis in a coordinate plane?

Back

The x-axis is the horizontal line in a coordinate plane where the y-coordinate is zero.

Tags

CCSS.5.G.A.1

Front

What is the y-axis in a coordinate plane?

Back

The y-axis is the vertical line in a coordinate plane where the x-coordinate is zero.

Tags

CCSS.5.G.A.1