Diagonally Speaking

How are the diagonals of different kinds of quadrilaterals related? To answer this question, explore the sketches below. Be sure to use the "drag test"!
  • Use the segment tool to add in the diagonals. (Click on the line icon). Also, add a point at the intersection of the diagonal.
  • Use the measure tool to find any lengths or angle measures. (Use the angle icon for angle measures; click on it to find the Distance or Length tool.)
  • BONUS FUN: Are there are any relationships among the lengths from the intersection of the diagonals to the vertices?





Isoceles Trapezoid