Plane Geometry

AABC ABCD acute angle adjacent angles altitude angles are equal apothem AXIOM base bisector bisects central angle chord circle whose radius circumference circumscribed Construct a triangle denoted diagonals diagram diameter divide draw a line efficiency value equal angles equal circles equiangular polygon equidistant equilateral triangle EXERCISES figure Find the area Find the locus Find the ratio geometric given angle given circle given line given point given straight line GROUP Hence hypotenuse inches inscribed angle interior angles intersect isosceles trapezoid isosceles triangle length Let the student measure method midpoint number of degrees pair parallel lines parallelogram perimeter perpendicular Post Proof Prop PROPOSITION Prove quadrilateral radii rectangle regular hexagon regular polygon rhombus right angle right triangle secant segments similar triangles tangent THEOREM trapezoid triangle ABC vertex angle vertices