Free SAT Lines, angles, and triangles practice questionsdigital SAT, 2026 format
Angle relationships inside triangles and around parallel lines cut by a transversal, plus proportional sides in similar triangles.
Answer each question, then read why the right answer is right and why the tempting one is wrong.
Question 1
Note: figure not necessarily drawn to scale.
In the quadrilateral shown, what is the value of x?
Question 2
Note: figure not necessarily drawn to scale.
In the triangle shown, the interior angles measure 2x°, 3x°, and 4x°. What is the value of x?
Question 3
In triangle PQR, the measure of angle P is twice the measure of angle Q, and the measure of angle R is 30° more than the measure of angle Q. What is the measure of angle P?
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