Class 9 | Chapter 10 | Circles | Exercise 10.5 | Question 4

01 Sep
Class 9 - Circles, , , , , , ,

Question 4: In Fig. 10.38, ∠ ABC = 69°, ∠ ACB = 31°, find ∠ BDC.

Question 3
Question 5

Prerequisite

Simple!

Concepts used:

  • Angle sum property of triangle
  • Angles in the same segment of a circle are equal

Theorem 10.9: Angles in the same segment of a circle are equal

 

Theorem 6.7: The sum of the angles of a triangle is 180º.

Chapter 10 – Circles

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Theorems

Theorem 10.1

Theorem 10.2

Theorem 10.3

Theorem 10.4

Theorem 10.5

Theorem 10.6

Theorem 10.7

Theorem 10.8

Theorem 10.9

Theorem 10.10

Theorem 10.11

Theorem 10.12

Exercise 10.1

Question 1 & 2

Exercise 10.2

Question 1

Question 2

Exercise 10.3

Question 1

Question 2

Question 3

Exercise 10.4

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Exercise 10.5

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Question 7

Question 8

Question 9

Question 10

Question 11

Question 12

Examples

Example 1

Example 2

Example 3

Example 4

Example 5

Example 6

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