Exterior Angle Theorem
\(∠x\) is the exterior angle. \(∠x + 92 = 180º\) (linear pair of angles) \(∠x =\:180-92 = 88º\) Applying the exterior angle theorem, we get, \(∠y + 41 = 88\) \(∠y = 88-41= 47º\) Exercises for Exterior Angle Theorem What is the value of \(p\) in the triangle? Find \(m∠YDC\). Find \(x\) in the given triangle and […]
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 […]
