A | B |

The radius of a circle is 3 cm. What is the circle's circumference? | C = 2(pi)r |

A square has an area of 16 sq. cm. What is the length of each of its sides? | 16 = s2 so 4= s |

A circle has an area of 49pi square units. What is the length of the circle's diameter? | 49pi = (pi)r2 so 7 = r |

the length of the diameter is 14 ft. What is the radius? | r = 1/2D so r = 7 |

to find perimeter.... | ...add the sides |

to find area of a rectangle... | multiply length times width |

area is expressed in.... | ... square units |

volume is expresed in... | ... cubic units |

perimeter is expressed in | ... units |

area is | the number of square units inside a plane figure |

parallelogram | a quadrilateral with 2 pairs of parallel sides |

triangle | polygon with 3 sides and 3 angles |

vertex | corner or intersection of geometric shapes |

quadrilateral | 4-sided polygon with 4 angles, but not always right angles |

rectangle OR square | has 2 pairs of opposite sides parallel, & 4 right angles |

square only | 2 pairs of parallel sides, 4 right angles, & all four sides are equal |

trapezoid | only have one pair of parallel sides |