Essentials of Geometry

A B and CD A B D ABCD adjacent angles base multiplied bisect central angle centre chord circumference circumscribed coincide construct a square convex surface cylinder diagonals diameter distance divided draw drawn equal altitudes equal bases equal circles equally distant equiangular equilateral triangle EXERCISES extreme and mean feet frustum generatrix given angle given circle given line given point greater hence homologous sides hypotenuse included angle inscribed angle inscribed circle interior angles isosceles triangle Let A B number of sides parallel parallelogram parallelopiped pentagon perpendicular plane prism Prob pyramid Q. E. D. Cor Q. E. F QUERIES radii radius rectangle regular polygon rhombus right angle right cone right triangle Scholium secant segments similar slant height sphere spherical triangle straight line tangent vertex vertices zone