## Plane Geometry: And Supplements |

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Page 134

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**vertex**. The lateral faces intersect in lines , called the lateral edges . Its altitude is the perpendicular from its**vertex**to its base . ( h ) A regular pyramid is a pyramid whose base is enclosed by a polygon that is both equilateral ...Page 157

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**vertex**. It is such that the section of it by a plane that intersects all of its faces on one side of its A**vertex**is a simple polygon . B D E D C 2. Draw a pattern for and form the polyhedral angle that has four 45 ° face angles . 3 ...Page 358

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**vertex**, not on its base , that is in the perpendic- ular to its base at the center . A ' V D C ' O ' B ' D Ο ...**vertex**to the center of the base . An element of the cone is the segment from the**vertex**to any point of the boundary ...### 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