M 1 m 2 m 3 m 4 July 8, 2019 16 32 64 128 M 1 m 2 m 3 m 4 reason M 1 2 m 2 3 m 4 7 M 1 2 m 2 3 m 3 4 m 99 100 M 1 x 2 2m 3 x m 4 0 3m m 1 )- 9 2m m 3 )+ 4 M ∠ 1 m ∠ 2 m ∠ 3 m ∠ 4 M angle 1+m angle 2=m angle 3+m angle 4 Given m 1 m 4 prove m 2 m 3 Solve m 3 m 4 m 1 m 2
