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deepaksoni
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Asked: 2021-03-31T13:43:38+05:30 In:

Question 9. (a) In the figure (i) given below, ABCD is a quadrilateral inscribed in a circle with centre O. CD is produced to E. If ∠ADE = 70° and ∠OBA = 45°, calculate (i) ∠OCA (ii) ∠BAC (b) In figure (ii) given below, ABF is a straight line and BE || DC. If ∠DAB = 92° and ∠EBF = 20°, find : (i) ∠BCD (ii) ∠ADC.

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Question 9. (a) In the figure (i) given below, ABCD is a quadrilateral inscribed in a circle with centre O. CD is produced to E. If ∠ADE = 70° and ∠OBA = 45°, calculate (i) ∠OCA (ii) ∠BAC (b) In figure (ii) given below, ABF is a straight line and BE || DC. If ∠DAB = 92° and ∠EBF = 20°, find : (i) ∠BCD (ii) ∠ADC.

This is the basic and conceptual question from Chapter name- circles
Topic – Angle properties of circles
Chapter number- 15

In the figure (i)  ABCD is a quadrilateral inscribed in a circle with centre O. CD is produced to E.  ∠ADE = 70° and ∠OBA = 45°, then we have to calculate (i) ∠OCA (ii) ∠BAC

In figure (ii) given below, ABF is a straight line and BE || DC.

∠DAB = 92° and ∠EBF = 20°, now we have to find : (i) ∠BCD (ii) ∠ADC.

ICSE Avichal publication
Understanding ICSE Mathematics
Question 9

circlesicse boardml aggarwal solution
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    1. Guru

      Solution:
      (a) ABCD is a cyclic quadrilateral
      ML Aggarwal Class 10 Solutions for ICSE Maths Chapter 15 Circles Ex 15.2 Q9.2
      ML Aggarwal Class 10 Solutions for ICSE Maths Chapter 15 Circles Ex 15.2 Q9.3
      ML Aggarwal Class 10 Solutions for ICSE Maths Chapter 15 Circles Ex 15.2 Q9.4
      ML Aggarwal Class 10 Solutions for ICSE Maths Chapter 15 Circles Ex 15.2 Q9.5

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