So today we learned lots of stuff.
We learned that without right angles you couldn't slam doors and that R.A.T stood for Right Angle Triangle.
What do you call 2 angles? A complementary Angle.
To make a straight line you must have 180 degrees.
2 angles that have 180 degrees are called Supplementary Angles.
The pythagorian equation is: A2+B2=C2
Here the pictures that Mr.Harbeck
put on the overhead: