Geo 9.4 Compositions of Transformations

Front

What is a composition of transformations?

Back

A transformation where a second transformation is performed on the image of a first transformation.

Front

What is the result of a double reflection over the x- and y-axes?

Back

It is equivalent to a rotation of 180 degrees.

Front

How many lines of symmetry does a shape with one line of symmetry have?

Back

1

Front

What is the angle of rotational symmetry for a shape with an order of 10?

Back

36°.

Front

What series of transformations maps triangle ABC onto triangle DEF?

Back

Reflect over x then translate left 6 up 1.

Front

Define translation in geometry.

Back

A transformation that moves every point of a shape the same distance in a specified direction.

Front

What is a rigid motion?

Back

A transformation that preserves distance and angle measures, such as translations, rotations, and reflections.

Front

What is the angle of rotation for a shape with 4-fold rotational symmetry?

Back

90°.

Front

What is the effect of reflecting a shape over the x-axis?

Back

The y-coordinates of the points of the shape are inverted.

Front

How do you determine the number of lines of symmetry in a regular polygon?

Back

The number of lines of symmetry is equal to the number of sides.