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Graeme McRae

  • Condition where one root is the square of the other

    Activity

    Graeme McRae

  • Point P inside Equilateral Triangle Distance from Sides is h

    Activity

    Graeme McRae

  • Triangle Incenter and Excenters

    Activity

    Graeme McRae

  • Circles through two points and tangent to line

    Activity

    Graeme McRae

  • Isosceles triangle w inscribed circle and tangent triangle

    Activity

    Graeme McRae

  • Cone inscribed in sphere

    Activity

    Graeme McRae

  • Two spheres in a cube, cross section diagonal view

    Activity

    Graeme McRae

  • 16-point star with exterior angle 157.5 degrees

    Activity

    Graeme McRae

  • Prime Solutions to (x-1)(y-1)=72

    Activity

    Graeme McRae

  • Diagonals of a Regular Octagon

    Activity

    Graeme McRae

  • Puzzle Find area of PQRS

    Activity

    Graeme McRae

  • Puzzle Find area of PQRS in general

    Activity

    Graeme McRae

  • Tetrahedron has square cross section

    Activity

    Graeme McRae

  • Cross section of cone, sphere, cylinder

    Activity

    Graeme McRae

  • Cone + Sphere = Cylinder

    Activity

    Graeme McRae

  • Area of Regular Octagon Equals This Rectangle

    Activity

    Graeme McRae

  • 3 congruent intersecting circles region 2

    Activity

    Graeme McRae

  • 3 congruent intersecting circles

    Activity

    Graeme McRae

  • Triangle 2 altitude feet equidistant from 3rd side midpoint

    Activity

    Graeme McRae

  • Barycentric Coordinates

    Activity

    Graeme McRae

  • Equilateral Triangle Barycentric Coordinates 234

    Activity

    Graeme McRae

  • Similar Polygons

    Activity

    Graeme McRae

  • Rhombus with diagonals 72 and 30

    Activity

    Graeme McRae

  • Parallelogram ABCD point P angles APB and CPD supplementary

    Activity

    Graeme McRae