Respuesta :
Answer:
2. it stays the same even if the angles in the triangle change
a. the angles must add up to 180Âș. a straight line is equal to 180Âș, so as long as the angles add up to 180Âș, it will be a straight line.
5. it represents the sum of the measures of the interior angles of the triangle
a. Kellianne lined up the interior angles of the triangle. if added they equal 180Âș which is the measure of the straight line.
7. it combines the three interior angles of the triangle to form a straight line
a. same answers as previous
8. it is a straight line with a measure of 180Âș
a. refer to above
hope this helps :)