Which statements are true about quadrilaterals?
choose all answers that are correct.
a.
all squares are rhombuses.
b.
all squares are rectangles.
c.
all rectangles are parallelograms.
d.
all trapezoids are parallelograms.

Answer – A, B and C
Out of the four options given, the statements which are true about quadrilaterals are as follows:
A. All squares are rhombuses. (But not all rhombuses are squares)
B. All squares are rectangles (But not every rectangle is a square)
C. All rectangles are parallelograms.
Option D is wrong because trapezoids have only a pair of parallel sides while parallelograms have two pairs of parallel sides

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm