Question

What is the length of CG?

Answer 1

b. 19

Explanation:

by similarity between two triangles BFG~BAC

• measure of angle BFG = measure of angle BAC by using corresponding angles in parallelism
• measure of angle BGF = measure of angle BCA by using corresponding angles in parallelism
• the third angle common
• so BF÷FA=BG÷GC
• 63÷21=57÷GC
• therefore GC=19