The same-side interior angle theorem states that the sum of same-side interior angles is 180 degrees. When two parallel lines are intersected by a transversal line, they form four interior angles. These angles, also known as consecutive interior or co-interior angles, are on the same side of a transversal line and inside the two parallel lines.
The same-side interior angles are supplementary when two parallel lines are cut by a transversal, meaning their sum is 180 degrees. To solve such angles, one must identify and prove the same-side interior angles, which are pairs of congruent angles on the same side of a transversal.
To solve for x, one should set up an equation and solve for x. It is important to remember that the sum of any pair of same-side interior angles will always equal 180 degrees. This is because the same-side interior angles are congruent and the sum of the angles formed on the same side of the transversal which are inside the two parallel lines is always equal to 180°.
In summary, the same-side interior angle theorem states that the sum of same-side interior angles is 180 degrees when two parallel lines are intersected by a transversal. This helps in finding angle measures, determining parallel lines, and solving equations.
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