NCERT Mathematics Class 9 Exemplar Ch 10 Circles Part 2

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5. In Fig.10.5, if AOB is a diameter of the circle and , then is equal to:

(A)

(B)

(C)

(D)

AOB is a diameter of the circle and AC = BC

AOB is a Diameter of the Circle and AC = BC

AOB is a diameter of the circle and AC = BC

Answer: D

6. In Fig. 10.6, if , then is equal to :

(A)

(B)

(C)

(D)

∠OAB = 40º, then ∠ACB is equal

∠OAB = 40º, then ∠ACB is Equal

∠OAB = 40º, then ∠ACB is equal

Answer: A

7. In Fig. 10.7, if , , then is equal to:

(A)

(B)

(C)

∠DAB = 60º, ∠ABD = 50º, then ∠ ACB is equal

∠DAB = 60º, ∠ABD = 50º, then ∠ ACB is Equal

∠DAB = 60º, ∠ABD = 50º, then ∠ ACB is equal

(D)

Answer: C

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