what type of angle is this?\nobtuse\nstraight\nright\nacute

what type of angle is this?\nobtuse\nstraight\nright\nacute
Answer
Brief Explanations:
An acute angle measures less than 90 degrees. A right - angle is exactly 90 degrees. A straight angle is 180 degrees. An obtuse angle measures more than 90 degrees but less than 180 degrees. The given angle is less than 90 degrees.
Answer:
D. acute