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natka813 [3]
3 years ago
5

A Parallelogram must be a rectangle when it’s •A.)Diagnols are perpendicular •B.Diagnols are congruent •C. opposite sides are pa

rallel •D. opposite sides are congruent
Mathematics
2 answers:
Verizon [17]3 years ago
4 0

Answer:A


Step-by-step explanation: the diagonals face each other making them perpendicular making both sides parallel to each other, being straight.


Artyom0805 [142]3 years ago
4 0

Answer:

B.Diagnols are congruent

Step-by-step explanation:

A, C and D are not for rectangle only



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Answer:

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First, differentiate the first time, term by term:

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↑ we'll substitute this later (4th step onwards)

Differentiate the second time:

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