USE A PROTARACTOR TO DRAW EACH ANGLE ANGLE OF THE GIVEN MEASURE      A.60    B.80   C.120   D.170   E.30   F.150   G.105   H.45

Dear Student
Use your protractor to draw 60°
The centre O of the piece is also the midpoint of its base line. In order to measure ∠AOB, place the protractor in such a way that its centre is exactly on the vertex O of the angle, the base line lies along the arm OA. We need to read the mark through which the arm OB passes, starting from O on the side A, as we observe in the above figure.

Thus we find ∠ AOB = 60°.

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