¶ 2019 AMC8 Problem 21
Problem:
What is the area of the triangle formed by the lines
Answer Choices:
A.
B.
C.
D.
E.
Solution:
These three lines enclose a triangle whose vertices are . The base of this triangle on the line has length , and its altitude on the has length . Thus the area of the triangle is .
Answer: .
The problems on this page are the property of the MAA's American Mathematics Competitions