Quadrilaterals

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Author:
JanineG14
ID:
90353
Filename:
Quadrilaterals
Updated:
2011-06-12 18:07:31
Tags:
Geometry Quadrilaterals
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Description:
Geometry (Quadrilaterals)
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  1. Angles inside a Quadrilateral always add up to...
    360
  2. What are the 4 most common Quadrilaterals?
    • 1) Square
    • 2) Rectangle
    • 3) Parallelogram
    • 4) Trapezoid
  3. Area of Square =
    L2
  4. Perimeter of a square =
    4L
  5. What am I?
    1) All sides are same length and opposite sides are parralel
    2) All angles = 90
    Square
  6. What am I?
    1) Opposite sides are parallel and the same length
    2) All angles = 90
    Rectangle
  7. What am I?
    1) Opposite sides are parallel and the same length
    2) Interior angles add up to 360
    Parallelogram
  8. What am I?
    1) Two sides are parallel
    2) Interior angles add up to 360
    Trapezoid
  9. Area of a Rectangle =
    L * W
  10. Perimeter of a Rectangle =
    2L + 2W
  11. Area of a Parallelogram =
    Base * Height
  12. Perimeter of a Parallelogram =
    2a + 2b
  13. Rhombus means...
    All sides are the same length, but the angles are not 90 degrees.
  14. Area of a Trapezoid =
    1/2(b+c) * H
  15. Perimeter of a Trapezoid =
    a + b + c + d
  16. What is a quadrilateral?
    Four sided figure
  17. What are the 3 diagonal properties of a square?
    • 1) equal in length
    • 2) intersect at 90 degrees
    • 3) bisect each other
  18. What are the 2 diagonal properties of a rectangle?
    • 1) equal in length
    • 2) bisect each other
  19. What are the 2 diagonal properties of a rhombus?
    • 1) intersect at 90 degrees
    • 2) bisect each other
  20. What is the diagonal property of a parallelogram?
    1) Bisect each other
  21. What is the formula for the sum of the interior angles for any polygon?
    • (number of sides - 2) * 180°
    • ex: Pentagon (5 sides - 2) * 180 = 540°
  22. What is another way to figure out the total sum of any polygon?
    Divide the polygon into triangles. We know that each triangle's sum of angles = 180.
  23. What is the definition of a regular polygon?
    All sides and angles are exactly the same length and measure.
  24. How do you find each angle in a regular polygon?
    Divide the sum of the interior angles by the # of sides.
  25. Ex: Pentagon total = 540°, # of sides = 5
    540/5 = 108° each angle.

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