Elements of Plane Geometry: For the Use of Schools

ABCD adjacent angles allel alternate angles altitude angle ABC angles ABD angles is equal antecedent and consequent B. I. Ax base BOOK VII centre circle whose radius circumference circumscribed circumscribed circle common measure Converse of Prop describe an arc diagonal diameter divided draw the line equal angles equal arcs equal B. I. Prop equal chords equal Prop equal respectively equiangular equivalent feet given angle given line given point given side half hence these triangles hypotenuse included angle inscribed angle isosceles Let ABC linear units longer than AC multiplied number of sides oblique lines opposite parallel parallelogram perimeter perpendicular PROBLEM prove quadrilateral radii rectangle regular polygons respectively equal right-angled triangle Scholium sides AC subtended tangent THEOREM three sides triangle ABC triangles are equal vertex