Part a) Find the expression that gives the perimeter of ∆XYZ
we know that
Perimeter of triangle ABC is equal to
In this problem ∆ABC and ∆XYZ are similar triangles
the scale factor is equal to r
so
therefore
the answer Part a) is
The expression that gives the perimeter of ∆XYZ is
Part b) Find the expression that gives the area of ∆XYZ
we know that
therefore
the answer Part b) is
The expression that gives the Area of ∆XYZ is