Question

If the perimeter of triangle ABC is 45, what is the perimeter of triangle CRB?
http://curriculum.kcdistancelearning.com/courses/GEOMx-HS-A09/a/assessments/T-PerimeterAreaTrianglesQuiz/Geometry_Unit4_5_Quiz_10q.gif

Answer 1

triangle ABC perimeter = 45..

so 45 = AB +BC +AC

from the figure,

45 = 9 + BC + 16
BC = 20

Now take triangle, CRB

Perimeter = CR + CB + RB = 15 + 19 + 20 = 54...