Respuesta :
Answer:
A.) 48°
Step-by-step explanation:
There is a right angle and an angle of 42°
Therefore
x=180-90-42. (sum of int angles of triangle)
x=48°
Answer:
(A) 48
Step-by-step explanation:
Triangles have 180°, so all you have to do is subtract the numbers you already know from 180.
180-42 = 138
The square on the left corner means that degree is a right angle. Right angles are always 90°.
138-90 = 48 degrees
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