Find the measure of the missing angle using the exterior angle sum theorm.

28°

Step-by-step explanation:

Theorem: the exterior angle of a triangle is equal tobthe sum of opposite interior angles of the triangle

therefore,

55 = unknown angle + 27

let the unknown angle be x

55 = x + 27

isolating x

x = 55 - 27

x = 28

thus, the missing angle is 28°

x= 149. 24+7=31. 180-31=149

your welcome

okay wait before i answer, is this for your points on a graph?