The 128° angle and the top right exterior angle are corresponding angles, which means they have the same angle measurement. The top right exterior angle is also 128°.
The ? angle and the bottom right exterior angle are also corresponding angles, so they will have the same measurements.
To determine the ? angle, we know that a line is 180°. So if we add the 128° angle and the bottom right exterior angle, they will equal 180°.
When we determine the bottom right exterior angle, we know the ? angle will be identical because they are corresponding angles.
180° of a line - 128° angle= bottom right exterior angle
180-128= 52°
Bottom right exterior angle= 52°
Therefore the ? angle also equals 52°.
I wish the angles were labeled so it would be easier to explain. I hope this makes sense.
Hope this helps! :)
