First, we can see that the top angle is 130°, that means the other side of the angle is 50° because that straight line must equal 180°.
Next, we know that the inside of a triangle must equal 180°. We know that one of the angle’s is 50°, that means we need to plug in the numbers and solve the other angles until the total of all three angles is 180°.
If we plug in 4 for x, this is what we get… 14(4) + 6 = 62° 16(4) + 4 = 68°
Now we know all three angles, but we can add to check… 50° + 62° + 68° = 180°
