Question

vertical angles are congruent. vertical angle theorem
diana is correct, but joby is not.
both diana and joby are correct.
neither diana nor joby is correct.
joby is correct, but diana is not.

Explanation:

To solve this, we recall the Vertical Angle Theorem: Vertical angles are always congruent (equal in measure). So if both Diana and Joby's statements align with this theorem (implying they state vertical angles are congruent), then both would be correct.

The Vertical Angle Theorem states vertical angles are congruent. If both Diana and Joby's reasoning aligns with this (e.g., they assert vertical angles are congruent), then both are correct.

Answer:

B. Both Diana and Joby are correct