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Constructions Class 9 MCQs Questions with Answers
Students are advised to solve the Constructions Multiple Choice Questions of Class 9 Maths to know different concepts. Practicing the MCQ Questions on Constructions Class 9 with answers will boost your confidence thereby helping you score well in the exam.
Explore numerous MCQ Questions of Constructions Class 9 with answers provided with detailed solutions by looking below.
Question 1.
Two radii of the same circle are always:
(a) may inchired at any angle
(b) parallel
(c) parallel and may inchired at any angle
(d) perpendicular
Answer
Answer: (c) parallel and may inchired at any angle
Question 2.
In Δ ABC, which of the following information is needed to construct it if it is known that measure of ∠B = 60 and BC = 6 cm :
(a) AB + BC
(b) CA + AB
(c) BC + CA
(d) All of the above
Answer
Answer: (d) All of the above
Question 3.
With the help of a ruler and a compass, it is possible to construct an angle of
(a) 40°
(b) 37.5°
(c) 47.5°
(d) 35°
Answer
Answer: (b) 37.5°
Question 4.
The construction of △ABC, given that BC = 5 cm, ∠B = 600 is not possible when the difference of AB and AC is equal to
(a) 4.2 cm
(b) 5.9 cm.
(c) 4 cm.
(d) 3 cm.
Answer
Answer: (b) 5.9 cm.
Question 5.
Which of the following angles can be constructed using ruler and compass?
(a) 35°
(b) 40°
(c) 90°
(d) 50°
Answer
Answer: (c) 90°
Question 6.
Two radii of same circle are always :
(a) may inchired at any angle
(b) perpendicular
(c) parallel
(d) parallel and may inchired at any angle
Answer
Answer: (d) parallel and may inchired at any angle
Question 7.
If two circles touches internally then distance between their centres is equal to
(a) sum of radii
(b) difference of radii
(c) not possible to determine
(d) none
Answer
Answer: (b) difference of radii
Question 8.
On a ray AB with initial point A, Taking A as centre and some radius, draw an arc of a circle, which intersects AB, say at a point D. Taking D as centre and with the same radius as before, draw an arc intersecting the previously drawn arc, say at a point E. Draw the ray AC passing through E. Then, the measure of ∠CAB is
(a) 30°
(b) 60°
(c) 45°
(d) 15°
Answer
Answer: (b) 60°
Question 9.
An angle whose measure is more than 180° and less than 360° is called a
(a) Reflex angle
(b) Acute angle
(c) Straight angle
(d) Complete angle
Answer
Answer: (a) Reflex angle
Question 10.
With the help of a ruler and compass, it is possible to construct an angle of
(a) 40°
(b) 37.5°
(c) 65°
(d) 50°
Answer
Answer: (b) 37.5°
Question 11.
Which of the following angles can be constructed using ruler and compasses?
(a) 35°
(b) 45°
(c) 95°
(d) 55°
Answer
Answer: (b) 45°
Question 12.
In Δ ABC if ∠B = ∠C = 300, which of the following is the longest side?
(a) BC
(b) AC
(c) AB
(d) none
Answer
Answer: (a) BC
Question 13.
An external bisector of an angle measuring 70° will divide the angle into two angles measuring
(a) 35°
(b) 55°
(c) 70°
(d) 110°
Answer
Answer: (b) 55°
Question 14.
The point of concurrence of the three angle bisectors of a triangle, is called
(a) Centroid
(b) Incentre
(c) Circumcentre
(d) Orthocentre
Answer
Answer: (b) Incentre
Question 15.
The construction of a triangle ABC with AB = 4 cm and ∠A = 60° is not possible when difference of BC and AC is equal to
(a) 3.5 cm
(b) 4.5 cm
(c) 2.5 cm
(d) 3 cm
Answer
Answer: (b) 4.5 cm
Question 16.
On a ray AB with initial point A, Taking A as centre and some radius, draw an arc of a circle, which intersects AB, say at a point D. Taking D as centre and with the same radius as before, draw an arc intersecting the previously drawn arc, say at a point E. Draw the ray AC passing through E. Then, the measure of ∠CAB is
(a) 15°
(b) 30°
(c) 45°
(d) 60°
Answer
Answer: (d) 60°
Question 17.
Which of these angles cannot be constructed using ruler and compasses?
(a) 120°
(b) 60°
(c) 140°
(d) 135°
Answer
Answer: (c) 140°
Question 18.
The internal and external bisectors of an angle form a
(a) Acute angle
(b) Straight angle
(c) Right angle
(d) Reflex angle
Answer
Answer: (c) Right angle
Question 19.
The bisector of an angle lies in its
(a) Interior
(b) On the arms of the angle
(c) Any where in the plane
(d) Exterior
Answer
Answer: (a) Interior
Question 20.
If two circles touches internally then distance between their centres is equal to
(a) difference of radil
(b) not possible to determine
(c) sum of radil
(d) none
Answer
Answer: (a) difference of radil
Question 21.
To construct a ΔABC in which BC = 10 cm and ∠B= 60 degrees and AB + AC = 14 cm, then the length of BD used for construction.
(a) 7 cm
(b) 14 cm
(c) 20 cm
(d) 10 cm
Answer
Answer: (b) 14 cm
Question 22.
With the help of a rular and compass, it is not possible to construct an angle of
(a) 35°
(b) 67.5°
(c) 82.5°
(d) 7.5°
Answer
Answer: (a) 35°
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