## Plane Geometry: And Supplements |

### From inside the book

Results 1-3 of 52

Page 109

...

...

**right triangle**is a triangle in which one angle is a right angle . The hypotenuse of the triangle is the side opposite the right angle ; the legs are the two sides that form the right angle . ( b ) An isosceles**right triangle**is a ...Page 110

... triangle , if the second angle is twice the first , and the third is of the first ? 2. How large is each angle of an isosceles

... triangle , if the second angle is twice the first , and the third is of the first ? 2. How large is each angle of an isosceles

**right triangle**? 3. Represent the second acute angle of a**right triangle**if the first acute angle contains x ...Page 116

... triangle is △ RST if ∠R = 50 ° and ZS = 80 ° ? 2. One angle of an isosceles triangle equals 60 ° . Prove that the triangle is equilateral . A 3. One acute angle of a

... triangle is △ RST if ∠R = 50 ° and ZS = 80 ° ? 2. One angle of an isosceles triangle equals 60 ° . Prove that the triangle is equilateral . A 3. One acute angle of a

**right triangle**measures 45 ° . What kind of**right triangle**is it ? 4 ...### Contents

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

LinesAnglesPlanes | 11 |

W W | 24 |

Copyright | |

13 other sections not shown

### Other editions - View all

### 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