In each of the following, name the required properties. If this is not possible, explain why. Complete parts (a) through (c) below. a. Two properties that hold true for all rectangles but not for all rhombuses Select all that apply. O A. Opposite sides are parallel. O B. The sum of all interior angles is 360°. O C. All sides are the same length. O D. All diagonals are the same length. O E. All angles must be right angles. O F. This is impossible. All rhombuses are rectangles. b. Two properties that hold true for all squares but not for all isosceles trapezoids Select all that apply. O B. All diagonals are the same length. O A. The sum of all interior angles is 360°. O D. Opposite sides are parallel. C. All angles must be right angles. O F. This is impossible. All isosceles trapezoids are squares. E. All sides are the same length.

Hampu's cats Higgs and Tellus have fallen out and he therefore has to build a new divided rest yard for them. He buys 50 meters of cat fence and intends to build a rectangular picnic fence according to the figure. What value should r have for the enclosure to be as large as possible? บ