# throwback maths 3

Can you recall the angle rules!

Solution

Angles on a straight line add to $180^\circ$, so the supplementary angle in the bottom right of the diagram is $180^\circ-116^\circ = 64^\circ$.

Angles in a triangle add to $180^\circ$. So we get the equation $44^\circ + 64^\circ + x = 180^\circ$. Therefore, $x = 72^\circ$