C. 5. As mentioned previously, the ratio of the size of the fist to the length of the arm is proportional for everyone, regardless of age or gender. At arm's length, your fist covers 10. The diagram below shows other interesting proportions. For instance, your middle three fingers extended as in a Scout salute cover 5 of sky, the same span as the pointer stars at the end of the bowl of the Big Dipper. The span between your pinky finger and forefinger equals 15, while the span between your thumb and pinky equals 25. (Note that some people can stretch their hands more than others, which may throw this last measurement off a bit. To find out your hand span, hold it up against the Big Dipper. If your finger and thumb can cover its length fully, your span is 25; a little less and it's probably closer to 20). 1 5 10 15 25 By establishing a proportional relationship and using the winter star map as a reference, complete the following parts a - c of this question. a. What is the angular length of the three stars that form Orion's belt? b. What is the angular distance from the Belt Stars to Sirius? A large equilateral triangle can be drawn between the stars Betelgeuse, Sirius, and Procyon. How many Scout salutes (5 each) are required to cover a side of that triangle?