ANGLES
1.) Adjacent Angle
2.) Vertical Angle
3.) Adjacent Angle
4.) Linear Angle
5.) Adjacent Angle
6.) Vertical Angle
EXPLANATION
Adjacent Angles
» Adjacent Angles are two angles that have a common vertex and a common side but do not overlap. In the figure, ∠1 and ∠2 are adjacent angles. They share the same vertex and the same common side.
Vertical Angles
» Vertical Angles are the angles opposite each other when two lines cross. "Vertical" in this case means they share the same Vertex (corner point), not the usual meaning of up-down.
Linear Angles
» A Linear pair of Angles is formed when two lines intersect. Two angles are said to be linear if they are adjacent angles formed by two intersecting lines. The measure of a straight angle is 180 degrees, so a linear pair of angles must add up to 180 degrees.
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