## Master the GED: Math Review--Geometry: Chapter 14 of 16Peterson's Master the GED: Math Review: Geometry offers readers an in-depth review of geometry for the GED Mathematics Test, Parts I and II. Readers who need additional practice for the Mathematics Test, will benefit greatly from the lessons and practice questions on: - Congruency and similarity
- Angles
- Triangles
- Quadrilaterals
- Polygons
- Circles
- Three-dimensional (3-D) geometric figures
- Right-triangle trigonometry
- Coordinate geometry
Master the GED: Math Review: Geometry is part of Master the GED 2011, which offers readers 3 full-length practice tests and in-depth subject review for each of the GED tests-Language Arts, Writing (Parts I and II); Language Arts, Reading; Social Studies (including Canadian history and government); Science; and Mathematics (Parts I and II)-as well as top test-taking tips to score high on the GED. For additional math review, see Master the GED: Math Review: Numbers and Master the GED: Math Review: Algebra and Descriptive Statistics. |

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### Contents

TRIANGLES | 1 |

QUADRILATERALS | 13 |

POLYGONS | 21 |

CIRCLES | 23 |

THREEDIMENSIONAL 3D GEOMETRIC FIGURES | 30 |

RIGHTTRIANGLE TRIGONOMETRY | 45 |

COORDINATE GEOMETRY | 49 |

SUMMING IT UP | 60 |

### Common terms and phrases

acute angles adjacent angles altitude angle in relation angle measures angles are congruent applying the Pythagorean approximate area formula bisecting centimeters CHALLENGING circle’s circumference circle’s radius congruent equal Coordinate geometry coordinate plane correct answer cube degree measure determine downward from left EASIER equal in degree equal in length equation equilateral triangle EXAMPLE find the length formula is included Formula Sheet provided gallons GED questions involving grid height hypotenuse information is provided interior angles intersecting lines left to right line Q line segment line’s slope midpoint minor arc ordered pair parallel lines parallelogram perimeter perpendicular polygon Pythagorean side triplet Pythagorean theorem quadrilateral rectangular solid right angle right cylinder right triangle Right-triangle trigonometry sides are congruent sides opposite slopes downward square feet square inches square pyramid surface area tangent third side trapezoid triangle is isosceles triangle’s trigonometric trigonometric functions units in length upward from left vertical volume formula x-axis