All squares are rectangles. Is this statement true or false?

A. TRUE

All squares are rectangles. Therefore, if a shape is a square, it is also a rectangle. Is this statement true or false?

A. TRUE

All triangles have three sides. Therefore, if a shape is a triangle, it must have three sides. Is this statement true or false?

A. TRUE

All squares are rectangles. Is this statement true or false?

A. TRUE

All mammals are warm-blooded. Is this statement true or false?

B. FALSE