a. All sides are congruent. Explanation: Choice a is NOT a property of the sides of a rectangle because a rectangle does NOT have equal length of sides. Thats a squarw
Choice b is a property of the sides of a rectangle because the consecutive sides (sides that have the same endpoint/connected) are perpendicular. Thats why rectangles have 2 pairs of 90° angles.
Choice C is true because the opposite sides of a rectangle must have same length of sides to form a pair of parallel sides, which is important for a rectangle
Choice D is also true because 2 pairs of parallel sides is important for a rectangle.
Im sorry if i didnt explain this well for you. Pls say if im correct, if i am brainliest please! -have a nice day SpaceMarsh
