Mathematics, 20.11.2019 01:31, avagymnast421

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

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Which of the following are not necessary when proving that the diagonals of a rectangle are congruen...