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Chapter 2: Q10. (page 69)

State the theorem that justifies the statement鈭�6鈮呪垹7.

The diagram,

Short Answer

Expert verified

The theorem that justifies鈭�6鈮�鈭�7is vertically opposite angles are always equal.

Step by step solution

01

Step 1. Define vertical angles.

When two lines intersect each other, four angles are formed. Two angles that are opposite to each other are called vertical angles and these angles are always equal.

02

Step 2. Observe the diagram.

From the diagram, it can be concluded that 鈭�6 and 鈭�7 are vertical angles.

03

Step 3. State the conclusion.

Since, vertical angles are always equal.

Therefore, the theorem that justifies 鈭�6鈮�鈭�7is vertically opposite angles are always equal.

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