Geometry

by Nolan and Ryan

Line A 1-dimensional straight path that extends forever in opposite directions.

Right Angle

An angle that is 90 degrees.

Perpendicular Line Segments Two line segments that intersect at right angles.

Line Segment

A part of a line between and including two points, called end-points of the segment.

Vertex

The point at which the rays of an angle meet.

Ray

A part of a line starting at the endpoint and continuing forever in one direction.

Intersecting Lines

Two lines that cross one another but do not form a 90 degree angle.

Convex

A polygon in which all vertices appear to be pushed outward.

Concave A polygon in which at least one vertex appear to be pushed inward.

Quadrangle -A four-sided polygon.

Parallel Lines Lines in a plane that are the same distance apart and never meet.

Rectangle

A parallelogram with all right angles.

Rhombus

A parallelogram with all sides the same length.

Trapezoid

A quadrilateral that has exactly one pair of parallel sides.

Parallelogram

A quadrilateral with two pairs of parallel lines.

Parallel Rays

Two rays that are the same distance apart and never meet..

Radius

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

Diameter

A line segment that passes through the center of a circle and has endpoints on the circle.

Circumference

The distance around a circle.

THe EndThank you for watching!