College Math Placement Practice Test

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Prepare for your College Math Placement Test with our expert-crafted quiz! Practice with diverse question formats and detailed explanations to enhance your math skills and boost your confidence.

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What is the sum of the interior angles of a triangle?

90°
180°
270°
360°

The correct answer is: 180°

The sum of the interior angles of a triangle is 180°. This is a fundamental theorem in geometry. When you add up the angles in any triangle, regardless of its type (scalene, isosceles, or equilateral), you will always find that they total 180°. This property holds true for all triangles and is a result of the fact that the angles of a polygon can be calculated using the formula (n - 2) × 180°, where n is the number of sides. For a triangle, n is 3, so (3 - 2) × 180° equals 180°. Understanding this concept is key to solving many geometry problems involving triangles.