Lesson Quadrilaterals
Explore each quadrilateral by measuring and comparing the side lengths and angles. Calculate the slope of the line to figure out if the lines are parallel. Draw the quadrilaterals diagonals to figure out how they intersect each other and if they may or may not be congruent.
Navigate the icons at the top of the page in order to draw additional segments and measure segments, slopes of lines, and angles. Use the back button to undo any changes you want to clear.