Acute , to start with, then right, obtuse, straight and reflex.
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An acute angle
1.269
90 - 38 = 52 degrees.
All triangle angles add to 180 degrees. Since one is 38 and the right angle is 90, the third angle is 180 -38-90 = 52 degrees
(180 - 38)/2 = 71 degrees (base angles of an isosceles triangle are congruent).