16 2/3% of what number is 90?

What is the difference between regular convex and concave polygons

In an improper fraction, is the numerator equal to, less than, or greater than the denominator

`if you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain. ''.