three points, A, B, and C exists in space such that B is "between" A and C. It is known that AB=7, BC=4 and AC=9. Are points A, B, and C colinear? Give a written explanation, supported by mathematical evidence, for your answer.

Complete the steps, which describe how to find the area of the shaded portion of the circle. find the area of the sector by multiplying the area of the circle by the ratio of the to 360. subtract the area of the triangle from the area of the sector.