Question 6 - Basic Geometry - Chapter 2 Class 6 - Lines And Angles (Ganita Prakash)

Transcript

Question 6 (a) Here is a ray (𝑂𝐴) ⃗ (Fig. 2.7). It starts at O and passes through the point A. It also passes through the point B. a. Can you also name it as (𝑂𝐵) ⃗? Why? Ray only has one end point Ray (𝑂𝐴) ⃗ has end point O If we join O and B, We get two end points – O and B So, it becomes line segment OB, not ray Question 6 (b) Here is a ray (𝑂𝐴) ⃗ (Fig. 2.7). It starts at O and passes through the point A. It also passes through the point B. b. Can we write (𝑂𝐴) ⃗ as (𝐴𝑂) ⃗ ? Why or why not? Here, (𝑂𝐴) ⃗ as (𝐴𝑂) ⃗ means O as end point (𝐴𝑂) ⃗ means A as end point Since both end points are different, we cannot write (𝑂𝐴) ⃗ as (𝐴𝑂) ⃗