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MATHS M.C.Q

Constructions · Rajasthan Board (RBSE) STD 9 (Rajasthan - English Medium). 3 questions.

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M.C.Q

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3 questions · timed · auto-graded

Question 11 Mark
Write the correct answer in the following:
With the help of a ruler and a compass it is not possible to construct an angle of:
  1. 37.5°
  2. 40°
  3. 22.5°
  4. 67.5°
Answer
  1. 40°
Solution:
With the help of a ruler and a compass, we can construct the angels, 90°, 60°, 45°, 22.5°, 30° etc. and its bisector of an angle. so it is not possible to construct an angle of 40°
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Question 21 Mark
Write the correct answer in the following:
The construction of a triangle ABC, given that BC = 6 cm, $\angle\text{B}=45^\circ$ is not possible when difference of AB and AC is equal to:
  1. 6.9cm
  2. 5.2cm
  3. 5.0cm
  4. 4.0cm
Answer
  1. 6.9cm
Solution:
We are given BC = 6cm and a base angle $\angle\text{B}$ the difference between other two sides AB and AC should be equal to or greater than BC.
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Question 31 Mark
Write the correct answer in the following:
The construction of a triangle ABC, given that BC = 3 cm, $\angle\text{C}=60^\circ$ is possible when difference of AB and AC is equal to:
  1. 3.2cm
  2. 3.1cm
  3. 3cm
  4. 2.8cm
Answer
  1. 2.8cm
Solution:
We are given BC = 3cm and a base angle $\angle\text{C},$ the difference between other two sides AB and AC should not be equal to or greater than BC.
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M.C.Q - MATHS STD 9 Questions - Vidyadip