Answer:
D. A straight angle.
Step-by-step explanation:
An acute angle is an angle that is less than 180°, and obtuse angle is an angle that is greater than 180°. A right angle is 90°. A straight angle is equal to 180°. I hope this helps and please mark me brainliest!
D straight angle
An angle which measures exactly 180 degrees is called a 'straight angle.
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x=5
esa es la respuesta correcta
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