Every triangle has three sides. Is this statement true or false?

A. TRUE

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

A. TRUE

All birds lay eggs. Is this statement true or false?

A. TRUE

All birds have feathers. Therefore, if a creature is a bird, it must have feathers. Is this statement true or false?

A. TRUE

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

B. FALSE