Geo In The Real World

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Geo In The Real World

  1. 1. Geometry in the Real World By: Amanda Granato
  2. 2. Point A point specifies only location; it has no length, width, or depth. We usually represent a point with a dot on paper
  3. 3. Line Segment A line segment is the portion of a line lying strictly between two points.
  4. 4. Plane A plane is a flat, two-dimensional object. We often represent a plane by a piece of paper, a blackboard, or the top of a desk. In fact, none of these is actually a plane, because a plane must continue infinitely in all directions and have no thickness at all. A plane can be defined by two intersecting lines or by three non-collinear points.
  5. 5. Angle A shape, formed by two lines or rays diverging from a common point (the vertex)
  6. 6. Perpendicular Lines Two lines that intersect to form a 90° angle
  7. 7. Parallel Lines Parallel lines are two lines in the same plane that never intersect
  8. 8. Triangle a geometric figure having three angles and three sides; any three-sided or three-cornered figure, area, object, part, etc.
  9. 9. Right Triangle A right triangle is a triangle with one right (90°) angle
  10. 10. Pentagon A polygon having five sides and five interior angles.
  11. 11. Hexagon a six-sided polygon
  12. 12. Square a plane figure having four equal sides and four right angles
  13. 13. Rectangle a parallelogram with four right angles
  14. 14. Trapezoid a quadrilateral with two parallel sides
  15. 15. Parallelogram a quadrilateral whose opposite sides are both parallel and equal in length
  16. 16. Circle A plane curve everywhere equidistant from a given fixed point, the center
  17. 17. Cylinder The surface generated by a straight line intersecting and moving along a closed plane curve
  18. 18. Sphere A three-dimensional surface, all points of which are equidistant from a fixed point
  19. 19. Isosceles Triangle An isosceles triangle is a triangle with two equal sides.
  20. 20. Angle Bisector An angle bisector is a ray that cuts the angle exactly in half, making two equal angles.
  21. 21. Edge An edge is a line segment where two faces intersect.

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