you can use a protractor or the paper test to see if the angle is a right angle
Degrees and radians.
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A protractor is the most accurate way of measuring angles.
No. A square is a polygon with four congruent sides and all angles measuring 90 degrees.
An equilateral triangle is a triangle with all sides & angles having the same measure.An isosceles triangle is a triangle with 2 sides & angles measuring the same, leaving one angle/side to be different.A scalene triangle is a triangle with no sides and/or angles measuring the same length.
A protractor is the common tool used in mathematics for measuring and drawing angles.
unit in earth science used for measuring angles in a circle or sphere?