it runs through the prime meridian
No. They can only be exactly 180 degrees. By definition, a linear pair is a pair of two adjacent supplementary angles, so together they must form exactly 180 degrees.
No - a pair of angles totalling 180 degrees are supplementary. Complementary angles sum to 90 degrees.
Complementary angles.
109.5 degrees
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The linear pair conjecture states that if two angles form a linear pair, the sum of the angles is 180 degrees.
The complement of 89 degrees is: 89+1 = 90 degrees which is a complementary angle
They intersect at 90 degrees
They are complementary
A pair of supplementary angles add up to 180 degrees. Therefore, the supplement to 112 degrees is 180 - 112 = 68 degrees.
One answer would be 'the Northern and Southern hemispheres, and the second pair would be the Eastern and Western hemispheres, as measured from Greenwich'.
Actually, it's the Linear Pair Postulate, which is... If two angles form a linear pair, then they are supplementary; that is, the sum of their measures is 180 degrees.