Quadrangle

Fun stuff...click on a vertex of the quadrangle to move its location. Note the coordinates on the lower left of your brower's window status line. The x and y axes go from -15 to +15. Select from the "pop-up" menu the componants you would like to have displayed. The source.

Questions

For Each version of
  1. A(1,1) B(3,4) C(10,4) D(8,1)
  2. A(0,-3) B(-4,-1) C(-2,1) D(2,-1)
  3. A(1,2) B(-3,-1) C(-7,2) D(-3,5)
  4. A(1,1) B(3,-3) C(-1,-1) D(-3,3)
  5. A(4,-1) B(-2,-1)) C(-2,2) D(4,2)
  6. A(-5,0) B(-3,4) C(5,0) D(3,-4)
  7. A(2,2) B(2,-2) C(-2,-2) D(-2,2)
  8. A(0,3) B(3,0) C(0,-3) D(-3,0)
  9. A(-7,0) B(-4,-4) C(-1,4) D(-1,0)
  10. A(4,6) B(10,3) C(4,-3) D(1,3)
  11. A(0,0) B(2,4) C(4,0) D(2,-2)
  12. A(6,0) B(3,-5) C(-4,0) D(3,5)

Other Links

"Quad in a Quad" puzzle from Cambridge

More Lessons

Basic Triangle

Mona Lisa & The Golden Rectangle