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Yes it must have at least one (really, it needs two or more). The sum of the interior angles in a pentagon is 540°.
If you had 4 angles @ 90°, then the fifth angle would need to be 180°, which is a straight line, then it would be a rectangle, not a pentagon, so you need at least two angles, greater than 90°.
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What is object has an obtuse angle?
some objects that has an obtuse angle is a pentagon, laptop and the objects that is greater than 90 degrees
Can a pentagon have 2 obtuse angles and 2 right angles and 1 acute angle?
No, a pentagon cannot have 2 obtuse angles, 2 right angles, and 1 acute angle. The sum of interior angles in a pentagon is always 540 degrees. If a pentagon has 2 obtuse angles (each measuring more than 90 degrees) and 2 right angles (each measuring 90 degrees), the total would already exceed 540 degrees, leaving no room for an acute angle.
Why is a obtuse angle called a obtuse angle?
A obtuse angle is called an obtuse angle because if obtuse means bigger in degrees and a right angle is 90 degrees than a obtuse angle must be over 90 degrees.
What angle is 110 degree?
110 degrees creates an obtuse angle.
What is a 170 degree angle called?
An obtuse angle.
