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Apply alternate interior angles to solve for x with an extra transversal

👉 Learn how to solve for an unknown variable using parallel lines and a transversal theorems. Two lines are said to be ...
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Using triangle proportionality theorem to prove parallel lines

👉 Learn how to solve for the unknown in a triangle divided internally such that the division is parallel to one of the sides of the triangle. The triangle proportionality theorem states that if a ...