Every time the earth travels around the sun, it completes one

If the basis of an isosceles trapezoid have lengths of 11 and 26, what is the length of the median?

(10 points) 1. cone 2. rectangle 3. triangle 4. circle 5. cylinder a. perpendicular cross section of a pyramid b. perpendicular cross section of a cylinder c. parallel cross section of a sphere d. shape created when a rectangle is rotated about the y-axis e. shape created when a right triangle is rotated about the y-axis

Who developed the theory of plate tectonics?