Geometry Honors Flash Cards

An acute angle is an angle whose measure is less than ninety degrees.

Distance is the amount of space between two objects or points.

Perpendicular lines are lines that make right angles when they intersect.

An acute triangle is a triangle where all of its angles are acute.

This is a point that is not on the interior or on the angle or figure.

A plane is one of the undefined terms of Geometry. It is a flat surface made up of points. It does not have depth and continues forever in all directions.

Adjacent angles are angles that have a common vertex and a common side. They are in the same plane, but they do not have any common interior points.

The interior is within an angle or a figure. It makes a segment with the sides of the angle or figure.

A point is another undefined term of geometry. It is a location that is represented by a dot.

An angle is the intersection of two noncollinear rays at a vertex.

A line is another undefined term of geometry. It is made up of points and continues infinitely in both directions.

A postulate is a statement that describes a basic relationship between simple terms of geometry.

This is a ray that cuts an angle in half.

This is the part of a line that you can measure. It contains two endpoints and the points between them.

A ray is a line that has one endpoint and continues on infinitely in the other direction.