Geometry: Lines, Angles & Polygons

A point is a specific location in space that has no size or dimension.

A line is a straight path that extends infinitely in both directions with no endpoints.

A ray is a part of a line that has one endpoint and extends infinitely in one direction.

A line segment is a part of a line that has two endpoints.

An angle is formed by two rays that share a common endpoint, called the vertex.

A vertex is the point where two lines or rays meet to form an angle.

A polygon is a closed figure formed by three or more line segments.

A quadrilateral is a polygon with four sides.

A trapezoid is a quadrilateral with at least one pair of parallel sides.

A square is a quadrilateral with all sides equal and all angles right angles.