for example let's say that there was 5 circles and 2 triangles and they wanted the ratio of circles to triangles, it would be 5:2. the order they ask it is the order they want. so the first thing they say is the first number and the second item they say is the second number.
We know angle P is 90 degrees because of Thales Theorem, and angle N is 60 degrees. Because the angles in a triangle have to add up to 180 degrees, angle PMN has to be 30 degrees.
Angle QMO is half of angle PMN, so it's 15 degrees. Angle MQO is equal to angle QMO because the radii make Triangle OQM isosceles, so angle MQO is 15 degrees.
