1 & 90
or
2 & 45
or
5 & 18
or
9 & 10
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Two angles that are equal to 90 degrees are Complimentary.
A rectangle.
complementary angles.
Two angels that are add together to make 180 are 90 and 90
Yes. A rhombus has two pairs of different angles. Two greater than 90' and two less than 90'.