- Judah L Schwartz
In the left hand panel you can build any shape triangle, quadrilateral or pentagon The right hand panel shows the distribution of side lengths and angles in your polygon. Looking at the right hand panel - how can you identify each of the following kinds of triangle [ scalene - isosceles - equilateral - acute - obtuse - right ] Looking at the right hand panel - how can you identify each of the following kinds of quadrilateral [ square - parallelogram - rhombus - kite - trapezoid - right angle trapezoid - quad that can be inscribed in a circle - quad in which a circle can be inscribed] How can you detect non-convex quads? Looking at the right hand panel - how can you identify [ regular pentagons - cyclic pentagons - degenerate pentagons that look like quads - degenerate pentagons that look like triangles ] How can you detect non-convex pentagons? If this applet permitted the construction of a hexagon, what would the right hand panel look like?