Practice Test GeeksAMC 8 - American Mathematics Competition 8 Practice Test
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Geometry & Measurement Flashcards

6 cards from real AMC 8 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Geometry & Measurement flashcards as text

  1. What is the volume of a rectangular box with dimensions 3 × 4 × 5?

    Answer: 60

    Volume = length × width × height = 3 × 4 × 5 = 60 cubic units.

  2. In a right triangle, the two legs are 5 and 12. What is the length of the hypotenuse?

    Answer: 13

    By the Pythagorean theorem, hypotenuse = √(5² + 12²) = √(25 + 144) = √169 = 13.

  3. A trapezoid has parallel bases of length 6 and 10, and a height of 4. What is its area?

    Answer: 32

    Area = ½ × (b₁ + b₂) × h = ½ × (6 + 10) × 4 = 32.

  4. Two supplementary angles are in the ratio 2:7. What is the measure of the larger angle?

    Answer: 140°

    Let the angles be 2x and 7x; then 2x + 7x = 180°, giving x = 20°, so the larger angle = 7 × 20° = 140°.

  5. How many degrees are there in the sum of the interior angles of a pentagon?

    Answer: 540°

    The interior angle sum of a pentagon = (5−2) × 180° = 3 × 180° = 540°.

  6. A right triangle has one leg of length 8 and hypotenuse of length 10. What is the area of the triangle?

    Answer: 24

    The other leg = √(10² − 8²) = √(100 − 64) = √36 = 6, so area = ½ × 8 × 6 = 24.