The corresponding angles are formed in plane geometry when two lines are crossed by another line. This results in corresponding angles at the matching corners of the intersections. Corresponding angles, on the other hand, are angles that occupy the same relative position simultaneously with another angle elsewhere in the figure. They are like one type of angle pair. As corresponding angles, you can have both alternate interior and exterior angles. To prove that lines are parallel, you can use Converse of the Corresponding Angles Postulate. Corresponding angles cannot be adjacent angles since they are never in contact. They cannot also be consecutive interior angles since they do not touch each other. The corresponding Angles are equal when the two lines are parallel when they are on the opposite side of the transversal. A transversal is divided into two angles that correspond to each other by being on the same side. One of these angles is inside the parallel lines (an interior angle) while the other is outside the parallel lines (an exterior angle).

The converse of corresponding angles:

  • Conversely, the Corresponding Angles Postulate means, “If two lines and transversal form corresponding angles that are congruent, and then the two lines are parallel.”
  • According to the Alternate Interior Angles Postulate, “If two lines and their transversal can generate alternate interior angles that are congruent, then the two lines are parallel.”.
  • According to the Converse of Alternate Exterior Angles Theorem, “If two lines and a transversal create both alternate exterior angles which are congruent, then the two lines are parallel.”.
  • The Same-Side Interior Angles Principle states “If two lines and a transversal produce additional (supplementary) same-side interior angles, the lines are parallel.”
  • A parallel line is indicated by the theory of Same-Side Exterior Angles and the converse principle, which states that “When two lines and a transversal form same-side exterior angles that are congruent, then they are parallel.”

The theorem of corresponding angles:

Corresponding angles are formed by three lines that are transversal to the second line. These three lines are congruent with eight angles formed by the two parallel lines. There are four pairs of corresponding angles:

∠ A corresponds to ∠ E

∠ B corresponds to ∠ F

∠ C corresponds to ∠ G

∠ D corresponds to ∠ H

Types of corresponding angles:

  • Corresponding Angles Formed by Parallel Lines and Transversals:When any parallel line is crossed by a transversal, then corresponding angles are of equal measurement.If two parallel lines are intersected by a transversal, then the first line and transversal form eight angles. The second line and transversal form eight angles as well. It is also important to note that a transversal intersects two parallel lines at other angles besides the corresponding angles
  • Corresponding Angles Formed by Non-Parallel Lines and Transversals: When there is a transverse line crossing a nonparallel line, the corresponding angles form can’t be related to each other, since they aren’t equal like a parallel line but are all corresponding to one another. When two non-parallel lines are intersected by a transversal, there is no correlation between the interior angles, exterior angles, vertically opposite angles, and consecutive angles.

Things to keep in mind when it comes to corresponding angles:

  • An angle that uses the same relative position at every intersection where two parallel lines cross over is called a corresponding angle to the other.
  • The corresponding angles in both regions of intersection must be congruent. In the case where the two lines have congruent angles, then they are parallel.

To know more about angles in detail, visit the Cuemath website &start your mathematical learning.

By Ahmed

 

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