Lines, rays and segments: Learn about lines, rays, and line segments
Right, acute, and obtuse: Learn the names for angles of all sizes
Parallel lines: Lines that never, ever cross
Perpendicular lines: Lines that cross, forming right angles
Naming angles: With these rules, you know which angle you mean
Perpendicular bisectors: The equidistant points also cut segments in two
A line is a straight path that goes on forever in both directions and can be named after any two points on it with a line symbol on top of them.
When a line does not go on forever, we called it is a line segments and line segment have endpoints place where they end or stop.
Rays go on forever in one direction and the have exactly one endpoint.
Angles and degrees: Learn what angles are, and how to measure them
Whenever two lines, rays, or line segment meet, they form an angle.
90 degrees angle are also known as right angle, you will often see right angle labeled with tiny squares. Angles that less than 90 degrees are acute angles. Angles greater than 90 degrees and less than 180 degrees are called obtuse angles. Angles between 180 degrees and 360 degrees are sometime called reflex angles and 180 degrees angle known as straight angle.
Points where lines cross are called intersections and lines that don’t intersect are parallel to each other or we can say that parallel lines run in precisely the same direction.
Lines that form right angles at their intersection are perpendicular.
A line is a straight path that goes on forever in both directions and can be named after any two points on it with a line symbol on top of them.
When a line does not go on forever, we called it is a line segments and line segment have endpoints place where they end or stop.
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