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Solution to the Mathematical Finale of the Mid-term Examination of Grade Two in Yuci District
Do AB midpoint m to connect me. AM=BM=BE=EC

EMB angle is equal to FCG = 45.

Angle EMA equals angle ECF equals 135.

Angle BAE+ Angle AEB= Angle FEC+ Angle FCG = 90.

Angle AEB+ angle FEC = 90°.

Angle BAE= angle FEC

It is proved that the sides of an angle are congruent and equal.