Geometry Vocabulary

Front

What is an unproven statement based on previous data called?

Back

Conjecture

Front

What is a line of reflection that maps a figure onto itself?

Back

Line of symmetry

Front

What is a plane in geometry?

Back

A flat surface that extends forever in all directions.

Front

What is a perpendicular bisector?

Back

A line that intersects a segment at its midpoint and forms a right angle.

Front

What is the definition of a median in a triangle?

Back

A segment from the vertex of a triangle to the midpoint of the opposite side.

Front

What is a polygon?

Back

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

Front

What is the sum of the interior angles of a triangle?

Back

180 degrees.

Front

What is a right angle?

Back

An angle that measures exactly 90 degrees.

Front

What is the Pythagorean theorem?

Back

In a right triangle, a² + b² = c², where c is the hypotenuse.

Front

What is a radius?

Back

A line segment from the center of a circle to any point on the circle.