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.
Best Answer: Linear angles are two adjacent angles at the the intersection of two straight lines. Linear angles add up to 180 degrees (i.e., are supplementary angles). See first source. Vertical angles are two angles opposite to one another at the intersection of two straight lines. Vertical angles are equal to one another (are congruent). See second source. Source(s): http://www.mathwords.com/l/linear_pair_o...