Question

so that m(ZCAB) = 30°. Find m(ZACB) and m(ZABC).
14. AB and CD are parallel chords of a circle whose diameter is AC. Prove
15. Prove that the circle drawn on any one side of the equal sides of an isos
S
2
S
12. P, Q R and S are points on a circle. If A is a point
on SR and QA produced meets the circle at B,
prove that ZSAB+ ZASB = ZPQR.
A
B
13. On a semicircle with AB as a diameter a point C is taken,
530
°
A
AB = CD
Р
triangle as diameter, bisects the base.
16. Points P, Q and R are taken on the circumference of a circle
such that PS drawn at right angles to PQ meets the circle
at S and RT drawn at right angles to PR meets the circle at
T. Prove that PQ = ST.
S
T
17. In the given figure, PA and PB are diameters
of congruent circles intersecting at P and Q.
Prove that ZAPQ = ZBPQ.
A
A
D
2309
18. If x = 150°, find whether points A, B, C and D are concyclic.
C
B
A
19. In the adjoining figure, ABCD is a quadrilateral in
which AD = BC and ZADC = ZBCD. Prove that points
A, B, C and D are concyclic.
D​

Answer 1

Answer:

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