1. Measures of the two triangles DEF and PQRare shown in the figure. Check if thetriangles are congruent. If congruent, whichof the following statements is true? Justify. Delta DEF cong Delta PQR ; triangle DEF cong triangle QPR ; Delta DEF cong Delta RPQ DP4.2 cm35⁰3.5 cm.35⁰4.2 cm3.5 cmEFQR

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

The first one is 2/3the second is 1/160the third is 4/125