Plane Geometry

ABCD adjacent algebraic altitude base bisector bisects called chord circumference circumscribed common Construct contained corresponding diagonals diagram for Prop diameter difference distance divide draw drawn equal equilateral triangle equivalent exercises exterior angle figure Find find a point formed four given circle given line given point given triangle greater hexagon hypotenuse included inscribed intercepted interior intersecting isosceles triangle length less limit line joining mean proportional measured median meet method midpoints opposite sides parallel parallelogram passes perimeter perpendicular polygon PROBLEM produced Proof PROPOSITION prove prove Proof quadrilateral quantities radii radius ratio rectangle regular polygon respectively right angle right triangle School segments sides similar smaller square straight line student tangent THEOREM third transform transversal trapezoid triangle are equal unequal vertex