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प्रश्न
Using ruler and compasses, construct the following angle:
67.5°
उत्तर
Steps of Construction:
(i) Draw a line segment BC.
(ii) With centre B and some suitable radius, draw an arc meeting BC at P.
(iii) With centre P and with the same radius, cut arcs PQ and then QR.
(iv) Bisect arc QR at K and again bisect arc QK at S.
(v) Bisect again arc SQ at T.
(vi) Join BT and produce it to A.
Then ∠ABC = `67 1/2°` or 67.5°
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