Question

question 2 of 10 which of the following are not necessary when proving that the diagonals of a rectangle are congruent? check all that apply. a. opposite sides are perpendicular. b. all right angles are congruent. c. opposite sides are congruent. d. all obtuse angles are congruent.

Explanation:

To prove rectangle diagonals congruent, key properties used are opposite sides congruent (C) and right angles congruent (B). Opposite sides are not perpendicular (A is false for rectangles), and rectangles have no obtuse angles (D is irrelevant).

Answer:

A. Opposite sides are perpendicular, D. All obtuse angles are congruent.