JAMB and WAEC Mathematics questions

861 questions with answers and explanations. Tap an option to check yourself.

1. Question 121· Euclidean geometry· WAEC

   Opposite angles of a cyclic quadrilateral are

   • Avertically opposite
   • Bcomplementary
   • Cequal
   • Dsupplementary

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2. Question 122· Euclidean geometry· WAEC

   Find the size of each interior angle of a regular hexagon.

   • A60°
   • B108°
   • C135°
   • D120°

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3. Question 123· Euclidean geometry· WAEC

   Two angles of a triangle are 47° and 68°. Find the third angle.

   • A55°
   • B75°
   • C65°
   • D115°

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4. Question 124· Euclidean geometry· JAMB

   The base angles of an isosceles triangle are each 50°. Find the third angle.

   • A130°
   • B50°
   • C100°
   • D80°

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5. Question 125· Euclidean geometry· WAEC

   An arc of a circle subtends an angle of 110° at the centre. Find the angle it subtends at a point on the remaining part of the circumference.

   • A55°
   • B110°
   • C70°
   • D220°

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6. Question 126· Euclidean geometry· WAEC

   Angles x and 2x + 30° lie on a straight line. Find x.

   • A60°
   • B50°
   • C40°
   • D30°

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7. Question 127· Euclidean geometry· WAEC

   The interior angles of a polygon add up to 1,260°. The number of sides is

   • A7
   • B9
   • C8
   • D10

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8. Question 128· Euclidean geometry· JAMB

   Find the sum of the interior angles of a hexagon.

   • A1080°
   • B540°
   • C720°
   • D360°

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9. Question 129· Euclidean geometry· JAMB

   

   In the diagram, BC is produced to D. Find the angle marked x.

   • A120°
   • B60°
   • C110°
   • D130°

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10. Question 130· Euclidean geometry· JAMB

    The angles of a quadrilateral are x, 2x, 3x and 4x. Find the largest angle.

    • A36°
    • B108°
    • C144°
    • D120°

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11. Question 131· Euclidean geometry· WAEC

    Two angles of a triangle are 65° and 45°. Find the third angle.

    • A70°
    • B80°
    • C60°
    • D110°

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12. Question 132· Euclidean geometry· WAEC

    Find the sum of the interior angles of a pentagon.

    • A360°
    • B720°
    • C540°
    • D900°

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13. Question 133· Euclidean geometry· WAEC

    A transversal cuts two parallel lines. One of a pair of co-interior (allied) angles is 64°. Find the other.

    • A26°
    • B64°
    • C116°
    • D126°

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14. Question 134· Euclidean geometry· JAMB

    Two tangents drawn to a circle from an external point are

    • Aperpendicular to each other
    • Bequal in length
    • Cparallel
    • Dunequal

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15. Question 135· Euclidean geometry· JAMB

    Two similar triangles have corresponding sides in the ratio 3 : 5. Find the ratio of their areas.

    • A27 : 125
    • B3 : 5
    • C9 : 25
    • D6 : 10

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16. Question 136· Euclidean geometry· WAEC

    In a circle, angles subtended by the same arc at the circumference are

    • Aright angles
    • Bsupplementary
    • Ccomplementary
    • Dequal

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17. Question 137· Euclidean geometry· JAMB

    The angle in a semicircle is

    • A180°
    • B90°
    • C60°
    • D45°

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18. Question 138· Euclidean geometry· JAMB

    The interior angles of a polygon add up to 1080°. How many sides has it?

    • A6
    • B7
    • C9
    • D8

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19. Question 139· Euclidean geometry· WAEC

    An exterior angle of a regular polygon is 30°. The number of sides is

    • A10
    • B12
    • C6
    • D9

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20. Question 140· Euclidean geometry· JAMB

    

    In the diagram, ABCD is a cyclic quadrilateral. Find the angle marked y.

    • A75°
    • B105°
    • C150°
    • D95°

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