00:01
Hi, in this video we're going to figure out the angles of a triangle.
00:05
So we're going to let x, y, and z be the angles in ascending order.
00:16
So in other words, we're going to assume that x is the smallest, y is the second smallest, and z is the largest.
00:24
And then we're just going to write all of the facts as equations.
00:28
So the first one, the simplest one, is just that the sum of them has to be 180, which of course we know.
00:35
Then the second, we know that the second angle is 20 degrees smaller, sorry, the second angle is 20 degrees larger than the smallest angle.
00:45
So the second one is y.
00:48
And so it's y is equal to the smallest plus 20...