Chapter 9 - Course 2
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Created by:
smacdermaid on February 26, 2011
Subjects:
math two-dimensional figures geometry
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17 terms
Terms | Definitions |
|---|---|
 Area | The number of units squares needed to cover a figure. |
| Circumference | The distance around a circle. |
| Hypotenuse | The side of a right triangle opposite the right angle. The longest side of a right triangle. |
| Perfect square | The square of a whole number. (Ex: 36 is a perfect square because 36 = 6²) |
| Perimeter | The distance around a geometric figure. |
| Pythagorean Theorem | a² + b² = c² |
| Square Root | One of the two equal factors of a number. (Ex: √(16) = 4 & -4 |
| Perimeter Formula | P = Sum of all sides |
| Circumference Formula | C = (π)(d) or C = 2(π)r |
| Area of a Rectangle | A = l(w) |
| Area of a Parallelogram | A = b(h) |
| Area of a Triangle | A = ½(b)(h) or A = (b*h)/2 |
| Area of a Trapezoid | A = (½)(h)(b1+b2) |
| Area of a Circle | A = πr² |
| Leg | The two sides that form the right angle in a right triangle. |
| Diameter | The distance across a circle through its center. |
| Radius | The length of a line segment between the center and circumference of a circle or sphere |
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