G.2 Final Review

Front

What is rotational symmetry?

Back

Rotational symmetry is when a shape can be rotated around a central point and still look the same at certain angles. The number of times it matches its original position in a full rotation (360 degrees) is called the order of rotational symmetry.

Front

How do you determine the order of rotational symmetry?

Back

To determine the order of rotational symmetry, rotate the shape around its center and count how many times it matches its original position before completing a full 360-degree rotation.

Front

What is a reflection in geometry?

Back

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

Front

What is the line of reflection?

Back

The line of reflection is the line over which a shape is reflected. Points on the shape are equidistant from this line.

Front

What does it mean for a shape to be translated?

Back

Translation is a transformation that moves a shape from one position to another without changing its size, shape, or orientation.

Front

How do you describe a translation?

Back

A translation can be described by how far and in which direction the shape moves, typically noted as horizontal and vertical movements (e.g., right 4, down 9).

Front

What is a line of symmetry?

Back

A line of symmetry is a line that divides a shape into two identical parts that are mirror images of each other.

Front

How do you find the number of lines of symmetry in a shape?

Back

To find the number of lines of symmetry, you can draw lines through the shape and see how many ways you can divide it into two identical halves.

Front

What is the difference between reflection across the x-axis and y-axis?

Back

Reflection across the x-axis flips the shape over the x-axis, while reflection across the y-axis flips it over the y-axis.

Front

What is the significance of the x-axis and y-axis in transformations?

Back

The x-axis and y-axis serve as reference lines for transformations such as reflections and translations in the Cartesian coordinate system.