Respuesta :

thebecks

Answer:

the unknown angle is 52 degrees

Step-by-step explanation:

one corner is a right angle so it is 90 degrees.

every triangle's angles add up to 180 degrees.

the unknown angle is 180-90-38=52 degrees

Answer:

53

Step-by-step explanation:

angles in a triangle = 180 degrees

90(right angle) + 38 = 128

180 - 128 = 52

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