Question

answer this question please its urgent i beg you .all the questions

Answer 1

hey mate Here is ur ans
15-
1-diagonals AC, BD
2-adjacent sides AB, BC
3-opposite sides
AB amd DC
4-adjacent angles -angle A and angle B



16-


1-radii(centre to boundary line)
OP, OD, OC, OB

2-a sector
area shaded within angle COB and circumference

3-points in interior
O, X, Y

4-longest chord =diameter
PC, BD

hope it helps you

Answer 2

hope this helps you