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Maths 1 Marks Question

Lines And Angles · Jharkhand Board (JAC) STD 9 (Jharkhand - English Medium). 20 questions.

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20 questions · self-marked practice — reveal the answer and mark yourself.

Question 11 Mark
Write the complement of the following angles :$ 35^\circ $
Answer
Since, the sum of an angle and its complement is $90^\circ $ Therefore, its complete will be $(90 - 35 = 55^\circ )$
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Question 21 Mark
Write the complement of the following angles: $20^\circ $
Answer
Since, the sum of an angle and its complement is 90^\circ Therefore, its complete will be $(90 - 20 = 70^\circ )$
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Question 31 Mark
Write the complement of the following angles:$ 30^\circ$
Answer
Since, the sum of an angle and its complement is $90^\circ $ Therefore, its complete will be $(90 - 30 = 60^\circ )$
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Question 41 Mark
Write the supplement of the following angles:$ 132^\circ $
Answer
Since, the sum of an angle and its supplement is $180^\circ $. $\therefore$ Its supplement will be $180^\circ - 132^\circ = 48^\circ .$
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Question 51 Mark
Write the complement of the following angles: $90^\circ$
Answer
Since, the sum of an angle and its complement is $90^\circ $. Therefore, its complete will be $(90 - 90 = 0^\circ )$
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Question 61 Mark
Write the supplement of the following angles: $138^\circ $
Answer
Since, the sum of an angle and its supplement is $180^\circ .$
$\therefore$ Its supplement will be $180^\circ - 138^\circ = 48^\circ .$
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Question 71 Mark
Write the supplement of the following angles: $54^\circ $
Answer
Since, the sum of an angle and its supplement is$ 180^\circ .$
$\therefore$ Its supplement will be $180^\circ - 54^\circ = 126^\circ .$
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Question 81 Mark
Write the complement of the following angles:$ 77^\circ$
Answer
Since, the sum of an angle and its complement is $90^\circ $Therefore, its complete will be $(90 - 77 = 13^\circ )$
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Question 121 Mark
If a wheel has six spokes equally spaced, then find the measure of the angle between two adjacent spokes.
Answer
$60^{\circ}$
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