MEDAL & FAN ANYBODY ?
An isosceles triangle with angles 70°, 70° and 40° is reflected across the line that is the bisector of the 40° angle. The resulting transformed figure is exactly the same as the original figure, therefore:
a. The original triangle has a line of symmetry.
b. The original triangle has 180° rotational symmetry.
c. The scale factor of the dilation is exactly 1.
d. The triangle is a regular polygon.

Question

MEDAL & FAN ANYBODY ?
An isosceles triangle with angles 70°, 70° and 40° is reflected across the line that is the bisector of the 40° angle. The resulting transformed figure is exactly the same as the original figure, therefore:
a. The original triangle has a line of symmetry.
b. The original triangle has 180° rotational symmetry.
c. The scale factor of the dilation is exactly 1.
d. The triangle is a regular polygon.

anonymous · Answer

@sleepyjess do you think you can help ?

sleepyjess · Answer

do you know what a bisector is?

anonymous · Answer

an angle bisector is equidistant from the sides of the angle when measured along a segment perpendicular to the sides of the angle. @sleepyjess

sleepyjess · Answer

i would probably go with a but im not completely sure