Trapezoid properties activity
Procedure for constructing a trapezium on Geogebra
Plot a point A with coordinates (0, 0)
Plot a point B on the x-axis (x'Ox)
Plot a point C on the (y'Oy) axis
Draw a line parallel to the horizontal axis passing through point C
Draw the line (AD) with point D lying on the line parallel to the horizontal axis passing through C.
Draw the line (BE) with point E lying on the line parallel to the horizontal axis passing through C.
Draw the polygon ABED.
Draw the line perpendicular to the horizontal axis passing through D. It intersects the x'Ox axis at point H
Draw the segment [HD], the height of the trapezium, and display it as a dotted line.
Trapezoid properties
The two bases of a trapezium are
Trapezoid properties
The height in a trapezium is