Question

Can you please explain the second part if question 1? ​

Answer 1

Answer:

angle 4 and and angle can be only equal by alt. interior angel

which happens when lines are parallel i.e a and b

Answer 2

Answer:

1-If a is parallel to b then angle1 will be equal to angle2 by corresponding angles.

2-If angle4 is equal to angle6 then a will be parallel to b by alternate angles.

Step-by-step explanation:

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