Vertical
Nonadjacent angles formed by two intersecting lines are pairs of angles that do not share a common vertex or side. When two lines intersect, they create four angles, and the angles that are opposite each other are called vertical angles, which are nonadjacent. For example, if two lines intersect, the angles formed at the intersection can be labeled as angles 1, 2, 3, and 4; angles 1 and 3, as well as angles 2 and 4, are nonadjacent to each other.
Lines that share a common point are called an intersection, or intersecting lines.
Concurrent lines.
Look for any intersecting lines or if they share any same angles to the sides of the triangle.
Lines sharing a common point intercept at that point.
adjacent angles
Nonadjacent angles formed by two intersecting lines are pairs of angles that do not share a common vertex or side. When two lines intersect, they create four angles, and the angles that are opposite each other are called vertical angles, which are nonadjacent. For example, if two lines intersect, the angles formed at the intersection can be labeled as angles 1, 2, 3, and 4; angles 1 and 3, as well as angles 2 and 4, are nonadjacent to each other.
They are said to be perpendicular. Or, if you wanted an example of a pair of such lines, one example is a plus sign.
Lines that share a common point are called an intersection, or intersecting lines.
Concurrent lines.
Look for any intersecting lines or if they share any same angles to the sides of the triangle.
Concurrent or intersecting lines.
The angles that share a vertex and a side of a transversal but no interior points are called vertical angles. Vertical angles are formed when two lines intersect, and they are always congruent.
Lines sharing a common point intercept at that point.
In mathematics, particularly in geometry, "vertically opposite" refers to pairs of angles that are formed when two lines intersect. These angles are opposite each other and are always equal in measure. For example, if two lines cross, the angles formed at the intersection can be categorized into pairs of vertically opposite angles, which share a common vertex but do not share a common side.
Adjacent means that it is next to something. So, if you two intersecting lines, the angles that are right next to each other or that share a line are called "adjacent"
Vertical angles are a pair of non-adjacent angles formed by the intersection of two lines. They are congruent, meaning they have the same measure. In other words, vertical angles are opposite each other when two lines intersect, and their measures are equal.