Which is the 30o-60o-right triangle theorem? a. in a right triangle, the hypotenuse is twice as long as a leg if, and only if, the measure of the angle opposite that leg is 30o. b. in a right triangle, the hypotenuse is three times as long as a leg if, and only if, the measure of the angle opposite that leg is 30o. c. in a right triangle, the hypotenuse is twice as long as a leg if, and only if, the measure of the angle opposite that leg is 60o. d. in an equilateral triangle, the hypotenuse is twice as long as a leg if, and only if, the measure of the angle opposite that leg is 30o.