SAT Math Practice Question #20784 - SATify | SATify
#20784
similarity
triangle
hard
240 sec
In right triangle ABC, angle C is the right angle and BC=180. Point D on side AB is connected by a line segment with point E on side AC such that line segment DE is parallel to side BC and AE=21EC. What is the length of line segment DE?
• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-). • Fractions must be in lowest terms. • Mixed numbers must be converted to improper fractions.