Geogebra- Spoken-Tutorial - Assignments
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 Geogebra tutorial- Understanding Quadrilaterals Properties



To construct a Trapezium

1.Draw a line segment AB

2.Mark a point C above the line

3.Draw a  parallel line to  AB at C 

4.Mark two points D and E on the Parallel Line

5.Join points AD and EB , making a trapezium ADEB

6.Draw perpendicular lines to segment AB  from D and E

7.Mark the points of intersection F and G of the perpendicular lines and AB

8.Measure distances DE 

9.Measure the height DF