Three centred arch- (a)Elliptical arch-It is the form of semi ellipse, Two centres are used for making up the ends and the third is used to draw the central position. (b)3 centred drop arch-procedure here is reversed. Ends of the arch formed by arc, central portion is drawn by the other 2 centres.
590,000
625,000
6% off
1,499
2,499
40% off
590,000
625,000
6% off
5.0
590,000
0.0
5.0
5.0
4.5
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