Which of the following is NOT a property of a regular polygon?
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Correct answer: (D) The angle made by each side at the centre is 60°, if it is a regular polygon with eight sides.
RRB JE · Mathematics
Geometry Previous Year Questions
11 Geometry (Mathematics) questions asked in RRB JE previous year papers, each with the correct answer and explanation. Read them free on UTpaper, or attempt the full papers as timed online tests.
- 11 questions
- Official answer key
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Other Mathematics topics
The larger of two supplementary angles is 22° more than the smaller. The smaller angle (in degree) is:
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Correct answer: (A) 79
The centres of two circles with radii 28 cm and 20 cm are 50 cm apart. What is the length (in cm) of the transverse common tangent?
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Correct answer: (D) 14
What is the angle formed between two lateral faces of a triangular glass prism called?
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Correct answer: (C) Angle of the prism
Let O be the incentre of a triangle PQR and S be a point on the side QR such that OS ⊥ QR. If ∠QOS = 15°, then ∠PQR = ?
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Correct answer: (D) 150°
If the three angles of a quadrilateral are 70°, 85° and 95°, then find the fourth angle.
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Correct answer: (C) 110°
O and C are respectively the orthocentre and the circumcentre of an acute angled
triangle ∆PQR. ∠QCR = 138°. A perpendicular PM is dropped from P on side QR. If
∠PQR = 52°, what is the degree measure of ∠RPM?
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Correct answer: (D) 31
A person standing 20 meters away from the base of a tower observes that the angle of
elevation to the top of the tower is 60°. Find the height of the tower. (Rounded off to two
decimal places)
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Correct answer: (A) 34.64 m
A scientist wants to demonstrate that dispersion depends on wavelength. She shines
monochromatic red light through a prism. What does she observe and why?
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Correct answer: (A) Only a single red ray emerges; no spectrum forms because there is only one wavelength
Two circles, having their centres at A and at B, touch externally at a point M. From a
point P on a tangent at M, tangents PQ and PR are drawn to the circles with points of
contact Q and R, respectively. If AP = 13 cm and AM = 5 cm, find the value of PQ + PR −
PM.
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Correct answer: (A) 12 cm
From the top of a cliff the angle of depression of a point on the ground 240 feet away
from the bottom of the cliff is 30°. Find the height of the cliff (in feet, rounded off to the
nearest integer).
(Use √3 = 1.732)
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Correct answer: (B) 139
How to use these RRB JE Mathematics questions
Every question here was asked in a real RRB JE paper; the paper and shift are shown on the card, and the number opens the question on its own page. Try each one before tapping Show answer, then attempt the full RRB JE papers as timed tests to check your speed under exam conditions.