Right angle
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Supplementary angles add up to 180 degrees so it is 100 degrees
145 degress
Let the angle be A, then the supplementary angle is (180 - A) and the complementary angle is (90 - A). But, 180 - A = 10(90 - A) = 900 - 10A 9A = 720 A = 80° The supplementary angle = 100° and the complementary angle = 10°
80 The angles in a quadrilateral add up to 360 degrees. So if 3 angles = 280 the fourth angle is 360-280 = 80
210 degrees.
The Right Angle.
An angle of 200 degrees is a reflex angle
80 degrees - on the other side of the normal (perpendicular) to the reflecting surface.
a right angle measures 90 degrees
An acute angle.
Lines are not measured in degress, however there is a straight angle which measures 180 degrees.
Each interior angle is 108 degrees and its 5 angles add up to 540 degrees
The sum of the measures of the angles of a triangle is 180 degrees. First, calculate the sum of the two known angles. Then subtract that result from 180. That difference is the measure of the third unknown angle. Given: One angle of a triangle is 15 degrees and the second angle of the triangle is 85 degrees. To find: We need to find the third angle of the triangle. Let the third angle of the triangle be x. We know that the sum of the angles in a triangle is 180 degrees. ==> 15 degrees + 85 degrees + x degrees = 180 degrees. ==> 100 degrees + x degrees = 180 degress. ==> x = 180 degrees - 100 degrees. ==> x = 80 degress. Therefore the third angle of the triangle is 80 degrees.
360, each of the four interior angles of a rectangle measures 90 degress.
complement 90degrees-49 = 41degrees supplement 90degrees-49 = 131degrees
If you're talking about a triangle, the third angle is 80 degrees.
180 - (80 + 60) ie 40