No, it is made of TWO LINES, two angles is a no-no.
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an angle is made from 2 lines so a circle does not have angles
all angles
2 right angles will form a supplementary angle of 180 degrees
All right angle triangles have 2 acute angles and one 90 degree angle.
By a straight angle I assume you mean an 180° angle, so two angles that form a 180° angle would be called supplementary angles.