Q: How many degrees are in the complement of a 71 degree angle?

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140

A supplementary angle is a 180-degree angle minus the number of degrees in the given angle.

89.999... degrees. An acute angle is any degree under 90.

Suppose the angle is x degrees. Its complement is 90-x So x is 2/3 of (90-x) 3x = 2*(90-x) = 180 - 2x 5x = 180 so that x = 36 degrees

As many as you like because any triangle that has a 90 degree angle is always a right angle triangle.

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90 degrees

140

47

It is 108 degrees

A supplementary angle is a 180-degree angle minus the number of degrees in the given angle.

170 degrees.

89.999... degrees. An acute angle is any degree under 90.

Did you mean "degree"? There are 90 degrees in a right angle.

90 degrees.

132

The sum of the angles in a triangle equals 180, so the third angle is forty degrees. JTPaulson

An obtuse angle is a measurement of 91 degrees to 179 degrees. If it is 90 degrees, it is a right angle. If it is 1 degree to 89 degrees it is an acute. If it is 180 degrees it is a straight angle.