Plantar Fasciitis. Plantar fasciitis is the most common condition that causes heel pain. Plantar fasciitis is due to irritation and inflammation of the tight tissue that forms the arch of the foot. Common symptoms of plantar fasciitis include heel pain with prolonged walking and standing.
Definitions:Complementary angles are two angles with a sum of 90Âº. Supplementary angles are two angles with a sum of 180Âº. Vertical angles are two angles whose sides form two pairs of opposite rays. We can think of these as opposite angles formed by an X. In the triangle shown below, the angles A and B are complementary because they have a sum of 90Âº. This is obvious since angle C is 90Âº and the other two angles must have a sum of 90Âº so that the three angles in the triangle together have a sum of 180Âº.
1 If two angles form a linear pair, then they are supplementary; that is, the sum of their measures is 180 degrees.  If there is a line and a point not on the line, then there is exactly one line through the point parallel to the given line.