To find the measure of an angle, you need to know the size of the entire angle and the other angles within the angle. Then, you subtract the smaller, known angles from the entire, large angle and you should get the measure of the missing angle.
The answer depends on the context. Angles are related in many ways: parallel lines, angles at a point, angles in a polygon - all impose constraints on angles from which their measure may be determined.
124 degrees
Polygons (regular, complex, irregular, etc) comes in many shapes, with a variety of interior angle totals. So the polygon in question needs to be more specifically named.
Are you talking about a triangle? If so, 33
The angles are all 90 degrees in a square.
Of what?
The answer will depend on what the shape is!
by using a protractor
The answer depends on the context. Angles are related in many ways: parallel lines, angles at a point, angles in a polygon - all impose constraints on angles from which their measure may be determined.
124 degrees
Polygons (regular, complex, irregular, etc) comes in many shapes, with a variety of interior angle totals. So the polygon in question needs to be more specifically named.
Are you talking about a triangle? If so, 33
The angles are all 90 degrees in a square.
If it is a complementary angle, the missing angle is 52 degrees. If it is a supplementary angle, the missing angle is 142 degrees. If it is an opposite angle, the missing angle is 38 degrees. Obviously, you need to know what type of angle you're looking for.
If it's a triangle then: 180-sum of known angles = unknown angle
In a triangle, the sum of all three angles is always 180 degrees. Given that one angle measures 35 degrees and another measures 43 degrees, you can find the missing angle by subtracting the sum of these two angles from 180 degrees. Therefore, the missing angle is 180 - (35 + 43) = 102 degrees.
The answer depends on what the angle is missing from!