CPM Student GuidebookCC Course 3 eTools Chapter 9CC3 9.1.2: Triangle Sum Theorem (Desmos)

CC3 9.1.2: Triangle Sum Theorem (Desmos)

Click on the link below.

1. Drag the colored angles about to change values. Note the measurements are at the left.

Drag the colored angles about to change values. Note the measurements are at the left.

2. Press the "Show Parallel Lines" button to show angles that are the same.

Press the "Show Parallel Lines" button to show angles that are the same.