Sunday, March 9, 2014

Area and Perimeter - Vocabulary

As you complete unit 8, you should be looking for the following vocabulary words and
their definitions:
• polygon
• perimeter
• area
• trapezoid
• parallelogram
• triangle
• rectangle
• circle
• circumference
• radius
• diameter
• legs (of a right triangle)
• hypotenuse

Formulas:
You should be looking for the following formulas as you read:
• area of a rectangle
• area of a parallelogram
• area of a trapezoid
• area of a triangle
• Heron’s Formula (for area of a triangle)
• circumference of a circle
• area of a circle
• Pythagorean Theorem
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19 comments:

  1. Melissa CeliMarch 9, 2014 at 6:03 PM

    Perimeter: The sum of the length of all the sides or the total distance around the outside of a 2D shape.

    ReplyDelete
  2. Melissa CeliMarch 9, 2014 at 6:08 PM

    Area: Area is the size of a surface or in other words an area is the amount of space an object takes up.

    ReplyDelete
  3. Paul BroadusMarch 10, 2014 at 4:15 PM

    Polygon; A plane shape (two-dimensional) with straight sides. Example; Pentagon or triangle

    ReplyDelete
  4. Paul BroadusMarch 10, 2014 at 4:20 PM

    Trapezoid: A quadrilateral with only one pair of parallel side

    ReplyDelete
  5. UnknownMarch 10, 2014 at 4:21 PM

    Perimeter is the distance around a two-dimensional shape.

    ReplyDelete
  6. UnknownMarch 10, 2014 at 4:54 PM

    In a right triangle, the sides opposite to the acute angles are called the Legs of a Triangle.

    ReplyDelete
  7. Melissa CeliMarch 10, 2014 at 9:29 PM

    Parallelogram: A parallelogram is a quadrilateral with at least one pair of parallel side.

    ReplyDelete
  8. UnknownMarch 10, 2014 at 10:30 PM

    In a right triangle the sides opposite to the acute angle are the legs of the triangle while the side opposite the right angle is called the hypotenuse.

    ReplyDelete
  9. yudelkaMarch 10, 2014 at 10:53 PM

    legs (of a right triangle) are the two shorter sides of a triangle

    ReplyDelete
  10. AnonymousMarch 11, 2014 at 6:44 PM

    -Area of a rectangle: A=wl
    -Area of parallelogram:A=bh
    -Area of a trapezoid: A=a+b over 2 multiplied by h

    ReplyDelete
  11. UnknownMarch 11, 2014 at 6:45 PM

    Radius- A straight line to the center of a circle

    ReplyDelete
  12. yudelkaMarch 12, 2014 at 12:08 AM

    Hypotenuse is the long side of a right triangle

    ReplyDelete
  13. UnknownMarch 12, 2014 at 8:27 PM

    Circumference and area of a circle- Area = π × r^2 Circumference = 2 × π × r

    ReplyDelete
  14. UnknownMarch 12, 2014 at 8:41 PM

    The Pythagorean theorem:

    This theorem is applicable to RIGHT triangles only. In a right triangle, the hypotenuse (the longest side of the triangle) is related to the other two sides. Let the hypotenuse be a, and the two other sides be b and c.

    So, a^2 = b^2 + c^2

    You can use this formula to solve for an unknown side.

    Here's a reference if more explanation is needed or if something was unclear : http://www.mathsisfun.com/pythagoras.html

    ReplyDelete
  15. UnknownMarch 12, 2014 at 9:01 PM

    Rectrangle- a plane figure with four straight sides and four right angles, esp. one with unequal adjacent sides, in contrast to a square.

    ReplyDelete
  16. UnknownMarch 13, 2014 at 9:08 PM

    The area of a right triangle is
    A=1/2.b.h
    A=12.(15in).(4in)
    A=1/2.(60in2)
    A=(30in2)

    ReplyDelete
  17. UnknownMarch 13, 2014 at 9:28 PM

    Diameter- A straight line going through the center of a circle connecting two points on the circumference.

    ReplyDelete
  18. UnknownMarch 14, 2014 at 3:53 PM

    Area of a circle: A = πr2 ( 3.14 x Radius to the second power ) .... Get it ?

    ReplyDelete
  19. UnknownMarch 20, 2014 at 11:26 AM

    March 11, 2014 at 6:45 PM

    Radius- A straight line to the center of a circle

    ReplyDelete

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