Measure it with a protractor. (If you needed a more mathematical answer with trigonomic functions, you need to state what data you know - i.e length of 2 sides, or length of one side and an angle, what the shape is etc... There is no general method to "how to work out the size of an angle" that works for all shapes.)
Measure it with a protractor.
A congruent angle means an angle of the same size
That will depend on the size of the original angle of and what kind of shape it is which has not been given.
An angle bead is a bead worked on or fixed to the angle of any architectural work, for example protecting the angle of a wall.
135 degrees.
Measure it with a protractor.
with a protactor......
A congruent angle means an angle of the same size
It is a measure of the size of the angle.
Angle of incidence can be anything. Angle of reflection is the same as angle of incidence.
14
No because each interior angle increases in size whereas each exterior angle decreases in size.
A supplement to an angle in Geometry is a second angle with a size equal to the difference between 180 degrees and the size of the first angle. If the size of two angles is 180 degrees, then the angles are 'supplementary".
90o...
Yes.
An obtuse angle is greater than 90 degrees.
A right angle's size is 90 degrees