Respuesta :
Answer:
80°
Step-by-step explanation:
Hello all triangles equal 180 degrees. So, with that being said to solve this you need to do 180-22-78 Which equals 80
Answer:
The third angle is 80 degrees
Step-by-step explanation:
In math, the rule is such that for all triangles, regardless of what kind they are, whether or not the sides are equal or all not equal to each other, the sum of the interior angles must add up to 180 degrees.