answersLogoWhite

0


Best Answer

If one angle of a p/gram is 90o, the other three MUST also be 90o.

(In a p/gram each pair of adjacent angles total 180o)

User Avatar

Wiki User

14y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: To make sure a parralelogram is a rectangle how many angles need to be 90?
Write your answer...
Submit
Still have questions?
magnify glass
imp