Right angle is 90 degree (L pattern)
Acute angke with a bent.
110 degree is an obtuse angle, formed left side of 90 degrees
Obsereve the line marks, and locate the angle.
Complete angle is a perfect circle
85 degree is an acute angle, just little before 90 degree
Straight line is 180 degrees.
Right angle is 90 degrees
Observe the angle lines and protactor marks carefully.
Complete angle is 180 degrees
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