If triangle abc is similar to triangle def then we know the following has to be true a all three angles must be equal
b corresponding sides must be in the same ratio
c all three angles must be equal and corresponding sides must be equal
d all three angles must be equal and corresponding sides must be in the same ratio

See below.

Step-by-step explanation:

None of the statements are correct.

If two triangles are similar, then each pair of corresponding angles is congruent, and the lengths of each pair of corresponding sides is in the same ratio.

Maybe it is meant for the correct answer to be choice d, but as stated above, no choice is correct.

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b