Chart explaining key geometric terms with definitions and visual examples.

- Point: A point is an exact spot in space. Example: Z. How to read it: "point Z".
- Line: A line is a straight path that goes on and on in two directions. Example: LM. How to read it: "line LM".
- Line segment: A line segment is a part of a line with two endpoints. Example: AB. How to read it: "line segment AB".
- Ray: A ray is a part of a line with one endpoint and one arrow that goes on forever. Example: CD. How to read it: "ray CD".
- Plane: A plane is an endless flat surface. Example: P. How to read it: "plane P".
- Parallel lines: Parallel lines never intersect. Example: WX and YZ. How to read it: "line WX is parallel to line YZ".
- Intersecting lines: Intersecting lines pass through the same point. Example: AB and CD. How to read it: "line AB intersects line CD".
- Perpendicular lines: Perpendicular lines pass through each other and always form 90° right angles. Example: YZ and WX. How to read it: "line YZ is perpendicular to line WX".
- Right angle: A right angle is a square corner. It equals 90°. Example: ABC. How to read it: "right angle ABC".
- Acute angle: An acute angle is less than 90°. Example: DEF. How to read it: "acute angle DEF".
- Obtuse angle: An obtuse angle is greater than a right angle but less than a straight angle. Example: GHI. How to read it: "obtuse angle GHI".
- Straight angle: A straight angle forms a straight line. It equals 180°. Example: JKL. How to read it: "straight angle JKL".