If the first two statements are true, what is the third? all squares have four equal sides. some rectangles have four equal sides. all squares are rectangles. true false unable to determine

THA THIRD IS FALSE.

If it is false that "Some rectangles have four equal sides", then there are no rectangles with 4 equal sides;
and if "all the squares have four equal sides", then no square can be a rectangle.

False, squares cannot be rectangles because squares have all even sides a rectangle does not. 

hope this helps

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