Sorry, but fallen knight is incorrect. Lets start with a.
In any convex polygon, the sum of their exterior angles is going to be 360 degrees. Because the polygon to angle a is regular, all we have to do is divide 360 by the number of sides on the polygon, giving us the answer 60 degrees.
Next, angle b. To find the angle measure of b, we need to consider the properties of triangles. We knew that when we add the angles up in a triangle, its sum will be 180. In polygons, there are much more angles.
So to find b we need to know how many triangles are in its polygon, and we can find this by subtracting 2 from the amount of sides it has, and in this case it has 8 side, so 6 triangles. Then we multiply 6 and 180, that gives us 1,080. Now because the polygon is a regular one, we can divide 1,080 by the amount of angles it has, and the answer is 135 degrees.
Any questions? Feel free to message me!
