In the straightedge and compass construction of the regular hexagon below, how do you know that ab ≅ bc?

options are above in the image

The blue whale is the largest animal living on the earth. the average blue whale measures 100 feet long (30 meters) and weighs 300,000 pounds (136,000 kilograms). a whale’s head is 1⁄3 of the length of its body. a new baby whale is 1⁄4 the length of a grown whale. the average man is 1⁄17 the length of a blue whale, and 1⁄1,818 its weight. a human baby measures 1⁄4 of the length of an adult. calculate the following information: how long is a whale’s head? how long is a new baby whale? how tall is the average man? how much does the average man weigh? how tall is the average human baby?

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take