Which type of angle measures more than 90 degrees but less than 180 degrees?

Which type of angle measures more than 90 degrees but less than 180 degrees?

• A. Obtuse
• B. Acute
• C. Straight
• D. Right

Answer: (A)

An angle that measures more than 90 degrees and less than 180 degrees is classified as an obtuse angle. The term "obtuse" specifically refers to angles that are wider than a right angle (which is exactly 90 degrees) but do not reach a straight angle (which is 180 degrees). Therefore, by definition, any angle falling within this measurement range is termed obtuse. Acute angles, in contrast, are those that measure less than 90 degrees; straight angles are exactly 180 degrees and do not fall within the specified range. A right angle is defined as being exactly 90 degrees. Thus, the distinction of obtuse angles is vital in understanding the different classifications of angles based on their measurements.

An angle that measures more than 90 degrees and less than 180 degrees is classified as an obtuse angle. The term "obtuse" specifically refers to angles that are wider than a right angle (which is exactly 90 degrees) but do not reach a straight angle (which is 180 degrees). Therefore, by definition, any angle falling within this measurement range is termed obtuse.

Acute angles, in contrast, are those that measure less than 90 degrees; straight angles are exactly 180 degrees and do not fall within the specified range. A right angle is defined as being exactly 90 degrees. Thus, the distinction of obtuse angles is vital in understanding the different classifications of angles based on their measurements.