Question

what is interesting in Chapter "lines and angels" define
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Answer 1

Answer:

An angle is formed when two lines intersect each other. ... An angle involves two legs and one common vertex at which two lines meet. For example: ∠AOD is formed when line AB and CD intersect with each other. Also, ∠AOD is formed between the leg AO and OD, so we include A, O, and D while naming the angle.

Answer 2

Answer:

I found Interesting in this chapter that If two lines Intersect a angle formed.