Applet contains a simple common-sense color-coded visual in which students discover the segment-addition postulate.
This applet is the 1st in a series of 3 applets that visually lead students to easily see and use the segment addition postulate.
For SAP - Problem 2, go to http://tube.geogebra.org/m/1513473.
For SAP - Problem 3, go to http://tube.geogebra.org/m/1513593.