Answer:because...
Step-by-step explanation:
they are the same size and both can reflect on eachother .
The answer is option B, see attached picture
AB=AC+CB
DE=DC+CE
AC=DC GIVEN EQUAL
CB=CE GIVEN EQUAL
AB=DE sum of equal sides
Answer:
There could be many but one of them is
(m+5)(m-9)=0....