Respuesta :
a parallelogram
diagram:
a: vertices (obtuse angle)
b: parallel lines Â
c: line segment
  a ______
  /       c
  /       /
 b       b
/______/Â
diagram:
a: vertices (obtuse angle)
b: parallel lines Â
c: line segment
  a ______
  /       c
  /       /
 b       b
/______/Â
they are connected because geometry has so many shapes you can add a line segment and then make the top of a triangle then put a line through the triangle and you have connected a line segment,angles, and symmetry!