<span> (2•5x3y10)
Hope that helps!</span>
Answer:
the answer is c
Step-by-step explanation:
40x + 80 < 400
40x < 320
x < 8
take 360 and divide by the number of sides
regular means the sides are equal therefore the angles are equal
360 /4 =90
360 /5 =72
B
All triangles must have angles that add up to the same amount of degrees, so if the two triangles share one exact point, it is assumed that those angles would be the same. Basically just use the fact that the sides are the same and marked by dashes, and the missing line can be proven with the use of the angles that are in between the point that both share.