Viewing in Doors & Windows. Many people use a screwdriver to remove a hinge pin when taking off a door. They simply place the tip up under the head of the pin and then tap on the end with a hammer.
Complementary angles are two angles whose measures add up to 90 degrees. You can think of them as two puzzle pieces that form one 90 degree angle when they are put together. When talking about complementary angles, it's important to remember that they're always in a pair.
Adjacent angles: Two coplanar angles with a common side, a common vertex, and no common interior points. example below shows angles ADB and BDC are complementary angles. that they share a common vertex D and have no common interior points. Complementary angles: Two angles whose measures have a sum of 90. The diagram below shows two angles when combined add up to 90 degrees. Although not pictured, complementary angles do not have to be adjacent.