Plane Geometry

ABCD acute adjacent altitude approaches base bisector bisects called centre chord circle circumference circumscribed coincide common constant construct describe diagonals diameter difference distance divide Draw drawn equal equidistant equilateral triangle equivalent exterior external extremities fall feet figure Find formed given circle given line given point greater half Hence homologous hypotenuse inches included inscribed intercepted intersecting isosceles triangle joining legs length less limit locus mean measured meet middle point number of sides parallel parallelogram passes perimeter perpendicular plane PROBLEM Proof proportional PROPOSITION prove quantities radii radius ratio rectangle regular polygon respectively right angle right triangle segments sides similar square straight line supplementary Suppose tangent THEOREM third touch trapezoid triangle triangle ABC true unequal variable vertex vertices