Iwant to know how to solve for y? in a triangle

For each expression use a property to write an equivalent expression.

Which of these triangle pairs can be mapped to each other using two reflections?

Which shows the correct lengths of side c in both scales? scale 1: 45 m; scale 2: 60 m scale 1: 60 m; scale 2: 45 m scale 1: 36 m; scale 2: 27 m scale 1: 27 m; scale 2: 36 m mark this and return save and exit