J only

M only

J and M only

None of these are parallelograms.

All are parallelograms.

There are four right angles.

There are four sides.

The diagonals have the same length.

The opposite sides have the same length.

All of (A)-(D) are true in every rectangle.

One of the books has an error.

One of the definitions is wrong. There cannot be two different definitions for rectangle.

The rectangles in one of the books must have different properties from those in the other book.

The rectangles in one of the books must have the same properties as those in the other book.

The properties of rectangles in the two books might be different.

The two diagonals have the same length.

Each diagonal bisects two angles of the rhombus.

The two diagonals are perpendicular.

The opposite angles have the same measure.

All of (A)-(D) are true in every rhombus.

D implies S which implies R.

D implies R which implies S.

S implies R which implies D.

R implies D which implies S.

R implies S which implies D.

All properties of rectangles are properties of all squares.

All properties of squares are properties of all rectangles.

All properties of rectangles are properties of all parallelograms.

All properties of squares are properties of all parallelograms.

None of (A)-(D) is true.

If 1 is true, then 2 is true.

If 1 is false, then 2 is true.

1 and 2 cannot both be true.

1 and 2 cannot both be false.

None of (A)-(D) is correct.

K only

L only

M only

L and M only

All are squares

PR and RS have the same length.

QS and PR are perpendicular.

PS and QR are perpendicular.

PS and QS have the same length.

Angle Q is larger than angle R.