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Geometry Formulas

20 cards · by HopQuiz · free flashcards with spaced repetition

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Cards in this deck

  1. Area of a rectangle — length × width
  2. Area of a triangle — ½ × base × height
  3. Area of a circle — π r²
  4. Circumference of a circle — 2 π r (or π d)
  5. Area of a square — side²
  6. Perimeter of a rectangle — 2 (length + width)
  7. Pythagorean theorem — a² + b² = c²
  8. Volume of a cube — side³
  9. Volume of a rectangular prism — length × width × height
  10. Volume of a cylinder — π r² h
  11. Volume of a sphere — (4/3) π r³
  12. Surface area of a sphere — 4 π r²
  13. Sum of a triangle’s interior angles — 180°
  14. Sum of a quadrilateral’s interior angles — 360°
  15. Area of a trapezoid — ½ (b₁ + b₂) × height
  16. Area of a parallelogram — base × height
  17. Volume of a cone — (1/3) π r² h
  18. Degrees in a full circle — 360°
  19. Interior angles of a hexagon sum to — 720°
  20. Area of a circle with r = 5 — 25π

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