Geometry Basics

Front

What is the definition of complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

What is the definition of supplementary angles?

Back

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

Front

What is the definition of vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal.

Front

What is the definition of rotational symmetry?

Back

A figure has rotational symmetry if it can be rotated around a central point and still look the same at certain angles.

Front

What is the definition of reflectional symmetry?

Back

A figure has reflectional symmetry if it can be divided into two identical halves that are mirror images of each other.

Front

What is the slope of a line parallel to y = mx + b?

Back

The slope of a line parallel to y = mx + b is m.

Front

What is the slope of a line perpendicular to y = mx + b?

Back

The slope of a line perpendicular to y = mx + b is -1/m.

Front

What is a transformation in geometry?

Back

A transformation is an operation that moves or changes a shape to create a new shape.

Front

What is a translation in geometry?

Back

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

Front

What is a reflection in geometry?

Back

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