Second, angles on a straight line add up to 180 degrees. Using these two ... of the equation with 𝒂 = 360 − 135. This means that the unknown angle (𝒂) is 225˚. This can be checked by ...

An angle is measured in degrees (°). Angles are a way of describing ... The other angle line is between 130° and 140°. So the angle 135°. Now let's try drawing an angle.