Question

cyclic quadrilateral is 180°
Title on a circle
Sum of two
procedure for (i)
O
(see figure 1).
2
Drew two circles of same radius on two coloured
glazed papers. One on yellow and one on red paper,
Now, paste the red coloured circle on a white chart
paper and mark on the points A, B, C and D on the
Join the chords AB, BC, CD and DA.(see fig. 2)
a yellow coloured circle on red coloured
circle which is pasted on white chart paper and by
paper folding obtain quadrilateral ABCD as shown
circumference of this circle,
Fic
Now, place
D
in (fig. 3)
A
4. Now, cut the quadrilateral ABCD from the yellow
one into four parts as shown below in figure 4 and
mark angle as ZA, ZB, Cand ZD.

Answer 1

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