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Geometry Quiz

Quiz Questions

  1. What name is given to the longest side in a right triangle?
  2. What do we call the circular pizza slice of a circle, the area between an arc and two radii?
  3. Who is known as the father of geometry?
  4. What name is given to a triangle in which all three sides have different lengths?
  5. What is a nine-sided regular polygon called?
  6. What sort of angle is less than 90 degrees?

  7. Any straight line segment connecting two points on a circle is called a what?
  8. If two adjacent sides of a parallelogram are equal, then it is known as what shape?
  9. In geometry, an icosagon has how many sides?
  10. A polygon is convex if all the interior angles are less than 180 degrees but what is it called if one or more of the interior angles is more than 180 degrees?
  11. What is the study of geometry on surfaces which are not flat called?
  12. The volume of which solid shape is equal to four-thirds times pi, times the radius cubed?
  13. What's the value of each interior angle of a regular hexagon?
  14. How many vertices does a cube have?
  15. Which solid shape's four surfaces are triangles?
  16. What is a plane curve which is mirror-symmetrical and is approximately U-shaped?
  17. What is a flat surface, which has length and breadth but no thickness?
  18. If two angles add up to form 90 degrees, they are referred to as what sort of angles?
  19. What are two geometric figures with the same shape and size called?
  20. A chiliagon has how many sides?
  21. What type of triangle has two sides of equal length?
  22. Who is the father of coordinate geometry?
  23. The trigonometric functions widely used in mathematics are the sine, the cosine, and what other function?
  24. Circles with the same centre but different radii are called what?
  25. Pi Day, first celebrated in the United States, is observed on the 14th of which month?


  1. Hypotenuse
  2. Sector
  3. Euclid of Alexandria
  4. A scalene triangle
  5. Nonagon
  6. Acute angle
  7. Chord (ANY straight line is a chord not diameter)
  8. Rhombus
  9. 20 (twenty-sides)
  10. Concave
  11. Non-Euclidean geometry
  12. Sphere
  13. 120 degrees
  14. 8 (vertices are sometimes called corners)
  15. Tetrahedron
  16. Parabola
  17. A plane
  18. Complementary angles
  19. Congruent
  20. 1,000 sides
  21. Isosceles
  22. Rene Descartes
  23. Tangent, or tan
  24. Concentric circles
  25. March (the 3rd month, since 3, 1, and 4 are the first three significant figures of Pi)