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| Construction - 5 |
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| To construct angles of 75o and 105o |
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| (i) Draw AB. Make any point O on it. |
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| (ii) With O as centre, draw an arc which cuts AB at B. |
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| (iii) With B as centre and same radius, cut an arc at Q and from Q with same radius, cut the arc at R. |
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(iv) Join OQ, OR.  and  |
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(v) Bisect  by constructing angle bisector OC. |
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(vi)  |
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(vii)  since OC bisects  |
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(viii)  |
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(ix) Construct OK to bisect  |
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(x) Then  |
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(xii) Then  |
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