NCERT Mathematics Class 9 Exemplar Ch 10 Circles Part 2 (For CBSE, ICSE, IAS, NET, NRA 2022)

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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

Answer: D

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

(A)

(B)

(C)

(D)

∠ 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

(D)

Answer: C

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