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Answer: A + C and B + D

Step-by-step explanation:

Angles and parallel lines. When two lines intersect they form two pairs of opposite angles, A + C and B + D. Another word for opposite angles are vertical angles. Vertical angles are always congruent, which means that they are equal. Adjacent angles are angles that come out of the same vertex.

Parallel lines are any two line pairs that do not overlap or come together at any point.

What is parallel line?

  • Parallel lines are lines in a plane that are always the same distance apart. Parallel lines never intersect.
  • Despite being on the same plane, these lines do not intersect.
  • Lines or rays that share a plane but do not intersect are also considered to be parallel.

What are examples of parallel lines?

Parallel lines are two or more lines that are located in the same plane and have a tendency to cross at infinity.

  • Railroad Tracks,
  • Ruler's Edges,
  • Zebra Crossing
  • Cricket Stumps,
  • Electrical Wires,
  • Racing Tracks, etc.

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