Answer :
The type of angles ∠1 and ∠7 are c) vertical angles. Vertical angles are a pair of non-adjacent angles formed by the intersection of two lines and are always congruent to each other. Hence, option c) is correct.
The type of angles ∠1 and ∠7 are c) Vertical angles. Vertical angles are a pair of non-adjacent angles formed by the intersection of two lines.
They are always congruent (equal in measure) to each other and share a common vertex (endpoint). In this case, ∠1 and ∠7 are vertical angles because they share a common vertex at point P and are formed by the intersection of lines AB and CD.
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