Geography World
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This document defines and describes basic geometric shapes and terms. It explains that a point has no size, a line has two points and all points in between, and a plane is a flat surface that extends infinitely. It then defines angles, perpendicular and parallel lines, triangles, right triangles, polygons from 3 to 12 sides, squares, rectangles, trapezoids, parallelograms, circles, cylinders, spheres, arcs, and cones.
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Geography World
- 1. Geometry in the Real World ( New York City ). By Caio Alves, 4 th Block.
- 2. Point Undefined term in geometry, it defines a location that has no size
- 3. Line (Segment) The part of a line consisting of two points and all the points in between
- 4. Plane Flat surface that has no thickness and extends forever
- 5. Angles A figure formed by two rays with a common endpoint
- 6. Perpendicular Lines Lines that intersect at 90 degrees angles.
- 7. Parallel Lines Lines that lie in the same plane, and are the same distance apart over their entire length .
- 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 A circle is A line forming a closed loop, every point on which is a fixed distance from a center point.
- 17. Cylinders A three-dimensional figure with two parallel congruent circular bases and a curved lateral surface that connect 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. Dodecagon 12 sided polygon.
- 20. Arc portion of the circumference of a circle
- 21. Cone Three dimensional figure with a circular base and a curved lateral surface that connects the base to a point called the vertex.