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Answer:
Step-by-step explanation:
B
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The first diagram shows lines that must be parallel lines cut by a transversal.
Given that, two diagrams out of which we are to select the one which shows lines must be parallel lines cut by a transversal.
In the first figure, the sum of two interior angles is given by
115° + 65° = 180°
which shows that the two lines cut by a transversal are parallel.
So, this option is correct.
In the second figure, the sum of two angles on a straight line is given by
115° + 65° = 180°
which shows that a straight angle is of measure 180°, which does not have any relation in proving the two lines to be parallel.
So, this diagram is not correct.
Thus, the first diagram is the correct option.
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