
To end this 6th Grade program, here is a list containing vocabulary about angles.
Complementary angles
Two angles are complementary if their sum equals 90°. The green and blue angles are complementary.
Supplementary angles
Two angles are supplementary if their sum equals 180°. The yellow and orange angles are supplementary.
Sum of angles in a triangle
In a triangle, the sum of the 3 angles is always equal to 180°.
Angles, alternate interior angles, alternate exterior angles, vertically opposite angles and corresponding angles
Finally, you can add to your culture the following notions.

Vertically opposite angles 

Alternate interior angles 

Alternate exterior angles 

Corresponding angles 
See also : geometry on fmaths.com

