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 area of a triangle with base 10 and height 6?

    Answer: 30

    Area = ½ × base × height = ½ × 10 × 6 = 30.

  2. A rectangle has perimeter 24 and length 8. What is its area?

    Answer: 32

    Using P = 2(l + w): 24 = 2(8 + w), so w = 4, and area = 8 × 4 = 32.

  3. What is the measure of each interior angle of a regular hexagon?

    Answer: 120°

    A hexagon's interior angles sum to (6−2)×180° = 720°, so each angle = 720°/6 = 120°.

  4. Two angles of a triangle are 55° and 75°. What is the third angle?

    Answer: 50°

    The angles sum to 180°, so the third angle = 180° − 55° − 75° = 50°.

  5. A square has area 144. What is its perimeter?

    Answer: 48

    Side = √144 = 12, so perimeter = 4 × 12 = 48.

  6. A circle has radius 7. What is its area? (Use π ≈ 22/7)

    Answer: 154

    Area = π × r² = (22/7) × 49 = 22 × 7 = 154.