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# Geometry Ch 10

### Stepp's Prentice Hall Geometry Chapter 10 Area (slides so play targets)

question | answer |
---|---|

Pi times d and 2 (pi) r are both equal to ___ | circumference |

Arc measure is measured from the ___ ___ | central angle |

Another name for a half-circle is ___ | semicircle |

To convert a Percent into a piece of a pie chart ____ | turn the % into a decimal and multiply by 360 |

True or False: arc measure and arc length are the same thing ____ | False |

True or False: only major arcs are named with 3 letters ___ | False |

True or False: an arc is shaped like a piece of pie ___ | False |

True or False: a segment formed by cutting a triangle off of a sector | True |

True or False: the formulas for arc length and sector area both begin with degrees/360 | True |

Area of a ___ is base times height | parallelogram |

A trapezoid has ___ bases | two |

Which is longer for a given regular polygon, the apothem or the radius? ___ | radius |

The __ is the height of each of the triangles we make for finding the area of a regular polygon | apothem |

The base of a parallelogram is ___ side | any |

The height of a parallelogram is the ___ distance to the base | perpendicular |

The base of a triangle is any ___ | side |

In a triangle the height is just the ___ to the base | altitude |

A rhombus shares the same area formula as the formula for a ____ | kite |

Apothems are perpendicular to the sides of polygons, so __ triangle tips are useful for solving | right |

___ triangle facts like the Pythagorean Thm & triples, 30-60 and 45-45 special triangles are useful | Right |

To get from the hypotenuse back to the short leg in a 30-60 triangle___ | divide by 2 |

To get from the short leg to the long leg in a 30-60 triangle ___ | multiply by radical 3 |

To get from the leg to the hypotenuse in a 45-45 triangle ___ | multiply by radical 2 |

A triangle with at least two ___ degree angles must be regular | 60 |

The area of a sector will always be less than ___ | the area of the whole circle |

The length of an arc will always be ___ than the whole circumference | less |

The measure of an arc will always be less than ___ | 360 |

If an equilateral triangle has a side length of 5, how long is its apothem? | 2.5 times radical 3 |

An equilateral triangle can be broken into two ___ special triangles | 30-60-90 |

Favorable outcomes divided by total outcomes is ___ | probability |

If the perimeter ratio of two similar figures is 2 to 3, then the area ratios will be ___ | 4 to 9 |

Multiplying by your degrees/360 converts your part into the proper ___ of a circle | fraction |

the product of the diagonals divided by 2 equals the area of a ____ | kite or rhombus |

The altitude to the base of an isosceles triangle bisects both the vertex angle and the ___ | base |

altitudes or heights always involve a ___ angle | right |

true or false: the area formulas for triangles and parallelograms are the same | False |

Kites and ___ both have right triangles in them since the diagonals are perpendicular | rhombuses (rhombi) |

To find the area of a regular polygon, you should draw the ____ triangle | apothem |

A sector is shaped like a piece of pizza, True or false | true |

To leave an answer in terms of pi, just treat the pi as if it were a ___ and do not covert to a decimal | variable |

answers left in terms of pi do not use ___ | 3.14 |

3,4,5 is the first Pythagorean ___ | triple |

complete this Pythagorean Triple, ___,12,13 | 5 |

Created by:
criswell216