Line 1 Segment AC equals 2. Segment FE equals 2. Segment AC is congruent to segment FE

Line 2 ∠A ≅ ∠F

Line 3 Length of segment AB.A (0, 2)B (2, 4) d equals square root of quantity x sub 2 minus x sub 1 squared plus quantity y sub 2 minus y sub 1 squared, d equals square root of quantity 0 minus 2 all squared plus quantity 2 minus 4 all squared, d equals square root of negative 2 squared plus negative 2 squared, d equals square root of 4 plus 4, d equals square root of 8

segment AB = 2.83

Line 4 Length of segment DE. D (2, 0) E (4, 4) d equals square root of quantity x sub 2 minus x sub 1 squared plus quantity y sub 2 minus y sub squared, d equals square root of quantity 2 minus 4 all squared plus quantity 0 minus 4 all squared, d equals square root of negative 2 squared plus negative 4 squared, d equals square root of 4 plus 16, then d equals square root of 20

segment DE = 4.47

Line 5 segment AB is congruent with segment DE

Line 6 triangle ABC is congruent with triangle FDEby SAS

In which line did the student make the first mistake?

Line 2

Line 5

Line 3

Line 4