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Saturday, 15 August 2026
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Mathematics Past Questions and Answers

Topic: Euclidean Geometry

Jamb Mathematics Questions - Euclidean Geometry

Question 11:
In the diagram above MN is a chord of a circle KMN centre O and radius 10cm. If < MON = 140°, find, to the nearest cm, the length of the chord MN.
  • A 10cm
  • B 18cm
  • C 17cm
  • D 12cm
View Answer & Explanation
Question 12:
In the diagram MN, PQ and RS are parallel lines. What is the value of the angle marked X?
  • A 123<sup style='font-size: smaller;'>o</sup>
  • B 170<sup style='font-size: smaller;'>o</sup>
  • C 117<sup style='font-size: smaller;'>o</sup>
  • D 137<sup style='font-size: smaller;'>o</sup>
View Answer & Explanation
Question 13:
In a regular polygon, each interior angle doubles its corresponding exterior angle. Find the number of sides of the polygon
  • A 8
  • B 6
  • C 4
  • D 3
View Answer & Explanation
Question 14:
Given the quadrilateral RSTO inscribed in the circle with O as centre. Find the size angle x and given RST = 60o
  • A 100<sup style='font-size: smaller;'>o</sup>
  • B 140<sup style='font-size: smaller;'>o</sup>
  • C 120<sup style='font-size: smaller;'>o</sup>
  • D 10<sup style='font-size: smaller;'>o</sup>
View Answer & Explanation
Question 15:
In the diagram above, O is the centre of the circle ABC, < ABO = 26° and < BOC = 130°. Calculate < AOC.
  • A 26°
  • B 13°
  • C 80°
  • D 102°
View Answer & Explanation