Which property is illustrated by the statement? (3+2.8)+5=3+(2.8+5)

For how answer my question this will be the last question can you answer in math subject

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

Type the correct answer in each box. spell all words correctly. a sequence of transformations maps ∆abc onto ∆a″b″c″. the type of transformation that maps ∆abc onto ∆a′b′c′ is a . when ∆a′b′c′ is reflected across the line x = -2 to form ∆a″b″c″, vertex of ∆a″b″c″ will have the same coordinates as b′.