To guarantee that quadrilateral SDGF is a square, you would need to confirm both the lengths of the sides and the angles between adjacent sides. The following two statements would be sufficient:
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SF ¯¯¯¯¯¯¯ ≅ FG ¯¯¯¯¯¯¯¯: This ensures that the length of side SF is equal to the length of side FG, which is a necessary condition for being a square.
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SF ¯¯¯¯¯¯¯ ⊥ FG ¯¯¯¯¯¯¯¯: This ensures that the sides SF and FG are perpendicular to each other, confirming a right angle that is also necessary for the shape to be a square.
Thus, the two statements that would guarantee SDGF is a square are:
- \( SF \cong FG \)
- \( SF \perp FG \)