Definition

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 * Definitions**

1. constant functions (term to be defined) Functions (general class word) that stay the same no matter what the variable (characteristics) does are called constant functions.

2. elapsed time (term to be defined) A period (general class word) of time that has passed, usually between a given starting time and ending time (characteristics).

3. expected value (term to be defined) The amount (general class word) that is predicted to be gained, using the calculation for average expected payoff (characteristics).

4. Factor (term to be defined) Any of the numbers or symbols (general class word) in mathematics that when multiplied together form a product (characteristics). For example, 3 is a factor of 12, because 3 can be multiplied by 4 to give 12. Similarly, 5 is a factor of 20, because 5 times 4 is 20. 5. Hypotenuse (term to be defined) The side (general class word) of the triangle that is opposite the right angle (characteristics). 6. Integer (term to be defined) Any positive or negative number (general class word) that does not include a fraction or decimal, including zero (characteristics). 7. multiplicative inverse (term to be defined) The number (general class word) that when multiplied by the original number will result in a product of one (characteristics). 8. normal distribution Also called "bell curve", the normal distribution (term to be defined) is the curved (general class word) shape of a graph that is highest in the middle and lowest on the sides (characteristics). 9. Numerator (term to be defined) The number (general class word) above the fraction bar that indicates the number of parts of the whole there are in a rational number (characteristics).

10. optical illusion (term to be defined) A drawing or  object (general class word) that appears to have an effect that it does not (characteristics). **http://www.shodor.org/interactivate/dictionary/** 2)  Depth of the triangular prism Base depth of the triangular prism is the length of the perpendicular segment traced from the base of the prism to its opposite vertex.

Obtuse angle Obtuse angle is the angle superior to 90ᵒ. Regular polygon Regular polygon is the polygon whose sides and angles have equal measure respectively. Parallelogram Parallelogram is a polygon whose four sides are parallels in pairs. Square Square is a parallelogram whose interiors angles are of 90degrees.