If the first two angles of a triangle are 45 degrees and 71 degrees then the 3rd angle is 64 degrees.
90 degrees
90 degrees
55 degrees
If the first two add up to 45 degrees, then the third angle is 135 degrees.If each of the first two is 45 degrees, then the third angle is 90 degrees.
100.
the other angle has to be 120 degrees, so that both angles add up to 180 degrees.
120
The complement is how much you have left after you subtract the first angle from 90 degrees.
The angles are: 43 degrees. 38 degrees and 99 degrees which all add up to 180 degrees
No. By definition, the compliment to an angle is an angle whose measure would combine with the first to reach 90 degrees. Also, by definition, an obtuse angle is an angle whose measure is greater than 90 degrees. There is no angle that can be added to an angle larger than 90 degrees that will cause that angle to be 90 degrees (because the measure of an angle is inherently positive.) Therefore, there is no compliment to an obtuse angle.
The sum of the interior angles of a triangle add up to 180o. So 180 - (45 + 71) = 64o
Let's assume the measure of the first angle is x degrees. The second angle is one-third as large as the first, so its measure is (1/3) * x = x/3 degrees. The third angle is two-thirds as large as the first, so its measure is (2/3) * x = 2x/3 degrees. Therefore, the measures of the angles in the triangle are x degrees, x/3 degrees, and 2x/3 degrees.