## Plane Geometry: And Supplements |

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Page 34

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**Post**. 1. One and only one straight line contains both of two given points . ( §5 ( a ) )**Post**. 2. A segment can be extended in each of two directions on it . ( §5 ( c ) )**Post**. 3. Two straight lines intersect in only one point ...Page 35

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**Post**. 15. Complements of the same angle or of equal angles are equal . ( §25 )**Post**. 16. If two adjacent angles have their exterior sides in a straight line , they are supplementary . ( §27 ( a ) )**Post**. 17. Supplements of the ...Page 74

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**Post**. 21 , p . 51 arcs from C and Das centers , inter- secting at E. 3 . 1 . Draw OE . 3.**Post**. 1 , p . 34 Statement . OE bisects Z BOA . Plan . Prove ∠COE and ∠ DOE corres . of cong . A. Proof . Statements Draw CE and DE . In ...### Contents

g The optional units from analytic geometry are included for three | 1 |

LinesAnglesPlanes | 11 |

W W | 24 |

Copyright | |

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### Common terms and phrases

ABCD acute angle adjoining figure altitude angle formed angles are equal apothem bisector bisects central angle chord conclusion congruent Construct converse coplanar corresponding sides diagonals diameter dihedral Draw drawn equal circles equidistant equilateral triangle exercises extended exterior angle figure for Ex Find frustum geometry given hypotenuse Hypothesis Informal proof inscribed intersect isosceles trapezoid isosceles triangle kind of angle lateral area length locus of points mean proportional measure meeting mid-point opposite sides parallel parallelogram perimeter perpendicular perpendicular-bisector Plan plane plane geometry Post postulate prism Prove pyramid quadrilateral radii radius ratio rectangle regular polygon rhombus right angle right circular right triangle secant segment similar sphere square Statements straight line Suggestion tangent theorem trapezoid trihedral angle vertex vertical angles Нур