ch. 12: Two-Dimensional Shapes
vocabulary
vocabulary
- Angle: Formed by two rays that share the same endpoint
- Closed Shape: A two-dimensional shape that begins and ends at the same point
- Line: A straight path extending in both directions with no endpoints
- Line Segment: A part of a line that includes two endpoints and all the points between them
- Open Shape: A shape that does not begin and end at the same point
- Plane Shape: A shape on a flat surface that is formed by curves, line segments, or both
- Point: An exact position or location
- Polygon: A closed plane shape with straight sides
- Ray: A part of a line, with one endpoint, that is straight and continues in one direction
- Right Angle: An angle that forms a square corner
- Two-Dimensional Shapes: Plane shapes that have length and width
polygons
polygons
- Closed; no openings
- Straight sides; no curved sides
- Always a plane shape (two-dimensional)
- Start and end at the same endpoint (vertex)
- Has to have at least 3 sides
- Cool link to more polygons
Lines
Lines
Quadrilaterals
Quadrilaterals
types of angles
types of angles
pattern blocks
pattern blocks
Click the image below to access online pattern blocks.
