End of Unit Assessment

Front

What is a reflection in geometry?

Back

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

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

What is the definition of rotation in geometry?

Back

Rotation is a transformation that turns a figure around a fixed point, called the center of rotation.

Front

How many lines of symmetry does a trapezoid have?

Back

A trapezoid has 0 lines of symmetry.

Front

What is the difference between reflection and translation?

Back

Reflection flips a figure over a line, while translation slides a figure to a new position without changing its shape or orientation.

Front

What is a transformation in geometry?

Back

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

Front

What is the formula for finding the sum of interior angles in a polygon?

Back

The sum of the interior angles of a polygon can be found using the formula (n-2) × 180°, where n is the number of sides.

Front

What is a line of symmetry?

Back

A line of symmetry is a line that divides a figure into two mirror-image halves.

Front

What is the definition of dilation in geometry?

Back

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

Front

What is the scale factor in a dilation?

Back

The scale factor is the ratio of the length of a side of the image to the length of the corresponding side of the original figure.