## Plane Geometry: And Supplements |

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... figure for Exercise 1 assume that ∠BAC = ∠ABC , and Z1 = 22 . Prove that Z3 = 24 . 3. In the

... figure for Exercise 1 assume that ∠BAC = ∠ABC , and Z1 = 22 . Prove that Z3 = 24 . 3. In the

**adjoining figure**assume that ZXZY is a right angle and that angles 1 and 3 are complementary . Prove that 23 = 23 = 22 . 4. In the figure ...Page 149

... figure like that above , why must COD be a straight line if 25 equals 100 ° and ∠4 equals 80 ° ? 3. In the

... figure like that above , why must COD be a straight line if 25 equals 100 ° and ∠4 equals 80 ° ? 3. In the

**adjoining figure**: X ( a ) What relation exists between 7 " F 40 ° AFGH and XYZ ? 8 " ( b ) How long is YZ ? r " 7 " Y ( c ) ...Page 231

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**adjoining figure**, FGH || JKL . Ο F / G H FG Con . = JK GH KL J K L 18. Hyp . Chord AC intersects chord DE Con . at ... figure for Ex . 19 : ( a ) How long is XW if ZW = 3 and WY = 12 ? ( b ) How long is XY if YW = 2 and YZ = 8 ...### 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