How do i do this never have use this before

Triangle dog was rotated to create triangle d'o'g'. describe the transformation using details and degrees. (10 points)

The transitive property of equality states that: o if a = b, then bra o if a = b, then ac = bc o if a = b and b= c, then a = if a = b and c= c, then a + b = b + c

Simplify the expression 10/11(22z) + (a+5) -1