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Classify an angle by its measure
What kind of angle is this?
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Correct
What does this generator do?
The generator rolls a random angle in the range 15° to 180°. You decide whether it is acute (less than 90°), right (exactly 90°), obtuse (between 90° and 180°) or straight (exactly 180°).
How to recognise each type
A right angle is exactly 90°. An acute angle is less than 90°. An obtuse angle is greater than 90° and less than 180°. A straight angle is exactly 180° — essentially a straight line.