Printable

2021 AMC Fall 10A Problem 7

Include the solution Back to the problem

2021 AMC Fall 10A Problem 7AMC 10 Step by Step

Name: Date: September 13, 2026

Angles & Polygons · difficulty 2 of 5 · about 3 min · position P1-10

As shown in the figure below, point $E$ lies on the opposite half-plane determined by line $CD$ from point $A$ so that $\angle CDE = 110^\circ$ . Point $F$ lies on $\overline{AD}$ so that $DE=DF$ , and $ABCD$ is a square. What is the degree measure of $\angle AFE$ ?

A)
$160$
B)
$164$
C)
$166$
D)
$170$
E)
$174$

2021 AMC Fall 10A Problem 7

Working