Elementary Treatise on Geometry ... |
Common terms and phrases
ABEF adjacent angles angle ABC angle ACB angle x bisected called centre chord circle whose radius circumference circumscribed circles consequently DEMON diameter dividing the product draw the lines drawn equal angles equal bases equal sides equal triangles exterior angle figure ABCDEF find the area found by multiplying fourth term geometrical figures geometrical proportion GHEF given angle given circle greater hypothenuse isosceles triangle last query length let fall line AB line AC line CD line MN mean proportional number of sides parallel lines parallelogram ABCD perpendicular Plane Geometry points of division principle PROBLEM prove quadrilateral radii radius rectangle ABCD rectilinear figure regular polygon ABCDEF Remark rhombus right angles right-angled triangle Sect semicircle side AB side AC similar triangles smaller SOLUTION square inches subtended tangent third line three angles three sides trapezoid trian triangle ABC triangles are equal Truth vertex zoid