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# MMA Spring Exam

Term | Definition |
---|---|

Salary | A set amount that you make per year. |

Commission | A percentage of sales. |

Medicare Tax | 1.4% of gross pay. Medical coverage for those over 65. |

Social Security Tax | 6.2% of gross pay. Small retirement payments for those over 65. |

Federal Income Tax Withholdings | Amount that the company withholds from your check toward Federal Income Taxes. Found from Tax Withholding Charts |

IRS | Internal Revenue Service. The government agency that collects income tax. |

Gross income | The total amount of income that you made from all sources. |

Principal | the original loan or investment amount |

Interest | a percentage amount of a loan amount that must be repaid along with the loan amount |

Simple Interest | interest that is calculated on just the loan principal, not including any accrued interest |

Annual Percentage Rate (APR) | the yearly interest rate for a loan |

Compound Interest | interest that is calculated on the total amount owed, including previously accrued interest |

Congruent Figures | Two figures that are the same shape and same size. Corresponding sides and angles are equal. |

Similar Figures | Two figures that are the same shape but not necessarily the same size. Corresponding angles are equal, and the sides are proportional. |

Proportion | The relative sizes of two or more values; written as a fraction or with a colon between the values. |

Scale Factor | The ratio of the length of a side of one figure to the length of the corresponding side of the other figure. |

Distance | How far apart two objects are. |

Area | The space occupied by a flat shape; measured in square units |

Volume | The amount of space taken up by an object; measured in cubic units. |

Pythagorean Theorem | a^2+b^2=c^2 - the area of the square whose side is the hypotenuse is equal to the sum of the areas of the squares on the other two sides. |

Hypotenuse | In a right triangle, the side that is across from or not touching the right angle. Also, the longest side. |

Leg | In a right triangle, one of the two sides touching the right angle. |

Right Triangle | A triangle with one 90° angle. |

Special Right Triangles | A triangle with 30°-60°-90° angles or with 45°-45°-90° angles. |

Distance Formula | d=√[(x2-x1)^2+(y2-y1)^2 ] |

Trigonometry | A branch of mathematics that studies relationships between side lengths and angles of right triangles. |

Opposite | In English, on the other side. In a right triangle, the leg that is not touching or is across from the angle. |

Adjacent | In English, next to. In a right triangle, the leg that is touching or is next to the angle. |

Theta (θ) | Greek letter used as a variable for unknown degree of an angle. |

SOHCAHTOA | An acronym that helps you remember the trig formulas. |

Sine (θ) | opposite/hypotenuse |

Cosine (θ) | adjacent/hypotenuse |

Tangent (θ) | opposite/adjacent |