So ABF angle +CBF angle +ACB angle =90 degrees.
Because arc BA= arc AF
Angle ACB= angle ABF
therefore
Angle ACB = (90 degrees) /2
(2) Arc BA= Arc AF
Angular ACB= angular ballistic missile
Another angle BAC= angle ADC=90 degrees
therefore
Similar to triangle ACB
Angle EMA= angle EAM
AEM is an isosceles triangle.
Have AE=EM
Easy to know: triangle and similar triangles cab
Angle EBA= angle EAB
Abe is an isosceles triangle.
There is EB = AE
So there is
BE=EM