Question

A student solved the following problem and made an error.
Triangles ABC and DEF. Angles A and F are congruent and measure 63 degrees. Coordinate for A 1, 2; B 1, 4; C 3, 3; D 5, 1; E 3, 2; F 5, 3.


Line 1

Line 2
∠A ≅ ∠F
Line 3
Length of .
A (1, 2)
C (3, 3)

= 2.23
Line 4
Length of .
E (3, 2)
F (5, 3)

=2.23
Line 5

Line 6
by SAS

In which line did the student make the first mistake?
Line 1

Line 5

Line 6


Line 2