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Geometry in the Real World
- 1. Geometry in the Real World By Sam Spoonemore Block 1
- 2. Point An undefined term in geometry, it names a location and has no size.
- 3. Line (Segment) A part of a line that is bounded by two end points, and contains every point on the line between its end points.
- 4. Plane An undefined term in geometry, it is a flat surface that has no thickness and extends forever.
- 5. Angle A figure formed by two rays with a common endpoint.
- 6. Perpendicular Lines Lines that intersect at 90 ° angles.
- 7. Parallel Lines Lines in the same plane that do not intersect.
- 8. Triangle A three-sided polygon.
- 9. Right Triangle A triangle with one right angle.
- 10. Pentagon A five-sided polygon.
- 11. Hexagon A six-sided polygon.
- 12. Square A quadrilateral with four congruent sides and four right angles.
- 13. Rectangle A quadrilateral with four right angles.
- 14. Trapezoid A quadrilateral with exactly one pair of parallel sides.
- 15. Parallelogram A quadrilateral with two pairs of parallel sides.
- 16. Circle The set of points in a plane that are a fixed distance from a given point called the center of the circle.
- 17. Cylinder A three-dimensional figure with two parallel congruent circular bases and a curved lateral surface that connects the bases.
- 18. Sphere The set of points in space that are a fixed distance from a given point called the center of the sphere.
- 19. Octagon An eight-sided polygon.
- 20. Cube A prism with six square faces.
- 21. Hemisphere Half of a sphere.