Two new angles are formed when an angle is bisected. They're equal, and each of them is equivalent to 1/2 of the original angle.
Yes.
two straight angles
Any three angles that sum to 180 can form a triangle.
Intersecting two perpendicular lines will form right angles.
How to Identify Angle Pairs Formed by a Transversal
Learn about Angles of parallel lines
Learn about Angles - part 3
Learn about Angle Pairs Formed by Parallel Lines
