Different geometries of the coronal loop. The purple dash-dot-dotted line and red solid line represent the linear and semi-circular loop geometry, respectively. The blue dash-dotted line, orange dashed line, and green dotted line represent the real loop geometry of Loops #1, #2, and #3, respectively. The apex positions of the real loops slightly deviate from the midpoint (x = 0.5), and the profiles of the coronal loops match the semi-circle loop geometry well.