## Plane Geometry: And Supplements |

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Page 223

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**secant**PA is drawn to a circle from a point P , cut- ting the circle at points B and A , then PA is called the whole**secant**, PB the external segment , and AB the internal segment . 254. If two**secants**intersect outside a circle , the ...Page 224

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**secant**and a tangent are drawn to a circle from the same point , the tangent is the mean proportional between the whole**secant**and its external segment . C A P B Hypothesis .**Secant**PBA and tangent PC are drawn from Conclusion . the ...Page 401

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**secant**through B , meeting O at E and R at D. Prove that BE and BD have the same ratio as the radii of the circles ...**secant**from the same point is 25 in . long . How long is the external segment of the**secant**? 176. The diameter ...### Contents

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

LinesAnglesPlanes | 11 |

W W | 24 |

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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