Exterior Angle Theorem
The exterior angle theorem says that an exterior angle of a triangle equals the sum of the two interior angles not adjacent to it. It follows directly from the fact that a triangle totals 180 degrees and a straight line does too. (∠x) is the exterior angle. (∠x + 92 = 180º) (linear pair of […]
How to Find Slope From a Graph?
TL;DR: Reading slope off a graph is way simpler than the textbook version makes it sound. Find two clear lattice points where the line crosses cleanly, then count the rise (how far up or down) over the run (how far across). Divide rise by run and you’ve got the slope. From (1, 2) up to […]
