Geometry Vocabulary Flashcard unit 1-4

Front

What is the definition of alternate exterior angles?

Back

A pair of angles formed by a transversal intersecting two lines, lying outside the two lines and on opposite sides of the transversal.

Front

What are adjacent angles?

Back

Two non-overlapping angles with a common vertex and one common side.

Front

What is the altitude of a triangle?

Back

A perpendicular segment from a vertex to the line containing the base.

Front

What is a congruence statement?

Back

A statement that uses the ≅ symbol and applies to figures or shapes.

Front

What is a diagonal in a polygon?

Back

A line segment that connects nonconsecutive vertices of a polygon.

Front

What is a transversal?

Back

A line that intersects two or more lines at different points.

Front

What are complementary angles?

Back

Two angles whose measures add up to 90°.

Front

What are supplementary angles?

Back

Two angles whose measures add up to 180°.

Front

What is a polygon?

Back

A closed figure formed by a finite number of line segments.

Front

What is a right angle?

Back

An angle that measures exactly 90°.