Area of a trapezoid

Area of a trapezoid

This app demonstrates the area of a trapezoid. Move the sliders to proceed.

<Show embed code>

<iframe fullscreen="" height="450px" scrolling="no" src="https://www.geogebra.org/material/iframe/id/vzpnwpbr/width/580/height/450/border/000000/rc/false/ai/false/sdz/false/smb/false/stb/false/stbh/false/ld/false/sri/false" style="border: 0px;" width="580px"> </iframe>

Parallelogram

Parallelogram

Area of a parallelogram. Move the slider to see explanation.

<Show embed code>

<iframe fullscreen="" height="300px" scrolling="no" src="https://www.geogebra.org/material/iframe/id/xqydy3a4/width/350/height/300/border/000000/rc/false/ai/false/sdz/false/smb/false/stb/false/stbh/false/ld/false/sri/false" style="border: 0px;" width="350px"> </iframe>

Area of Triangle

Area of a triangle

Area is calculated: 1/2 * base * height. In this applet area of a triangle is represented with blue color and it is area of a rectangle divided by 2.

<Show embed code>

<iframe fullscreen="" height="430px" scrolling="no" src="https://www.geogebra.org/material/iframe/id/rupp6ccu/width/520/height/430/border/000000/rc/false/ai/false/sdz/false/smb/false/stb/false/stbh/false/ld/false/sri/false" style="border: 0px;" width="520px"> </iframe>