a line
a hemisphere
I'm assuming you mean "What does dividing into two congruent parts mean?". It means to divide into two identical halves.
line symmetry
It will be a line of symmetry creating a 'mirror image'
Hemispheres
a line
Bilateral symmetry means you can divide the shape into two halves, and the halves would be congruent. Radial symmetry means all the parts that are connected to a common point are congruent.
congruent halves are just a posh way of saying 'split in two'. but these two shapes must be identical in shape, size, angles, sides etc... they must be exactly the same.
a hemisphere
paperImproved Answer:-It has line symmetry
Infinite ways
I'm assuming you mean "What does dividing into two congruent parts mean?". It means to divide into two identical halves.
Half a sphere is a hemisphere
A bisector splits the angle into to equal halves.
line symmetry
It will be a line of symmetry creating a 'mirror image'