Unit 3 Mathematics Concepts and Terms

Front

Adjacent Angles

Back

Two angles that share a common side and a common vertex but do not overlap. They are next to each other.

Front

Complementary Angles

Back

Two angles whose measures add up to 90 degrees.

Front

Supplementary Angles

Back

Two angles whose measures add up to 180 degrees.

Front

Vertical Angles

Back

A pair of opposite angles formed when two lines cross. They are always equal.

Front

Polygon

Back

A closed shape made up of straight lines. Examples include triangles, rectangles, and pentagons.

Front

Triangle

Back

A polygon with three sides and three angles.

Front

Right Triangle

Back

A triangle that has one 90-degree angle.

Front

Hypotenuse

Back

The longest side of a right triangle, located across from the right angle.

Front

Square-Based Pyramid

Back

A pyramid with a square as its base and four triangular faces that meet at a single point (vertex).

Front

Corresponding

Back

Matching parts of shapes, such as angles or sides, that are in the same relative position.