Elementary Geometry Practical and Theoretical

AABC altitude base BC bisects Calculate centimetres centre chord circle of radius circles touch circumcircle circumference common tangent concyclic Constr Construct a triangle cyclic quadrilateral Data describe a circle diagonal diameter distance divided Draw a circle Draw a straight drawn parallel equal circles equiangular equidistant equilateral triangle exterior angles find a point Find the area fixed point given angle given circle given line given point given straight line hexagon hypotenuse inch paper inscribed isosceles triangle LAOB LAPB Measure meet mid-point miles obtuse angle opposite sides parallelogram pentagon Plot the locus polygon produced protractor Prove quadrilateral ABCD radii ratio rect rectangle contained reflex angle regular polygons Repeat Ex rhombus right angles right-angled triangle segment set square sides equal subtends tangent THEOREM triangle ABC units of length vertex vertical angle