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Add the first two angles together and subtract the total from 180 to find the 3rd angle

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13y ago
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Q: How do you find the third interior angle of a triangle?
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Related questions

How do you find the hypotenuse with one angle missing?

The total of the three interior angles in a triangle is 180 degrees. if you know two of the angles, subtract them from 180 and that gives you the third angle.


Find the third angle of a right triangle if the measure of on of the angles is 68?

The sum of interior angles of any triangle is 180 degrees. A right triangle is defined as a triangle having one angle that measures 90 degrees. Therefore, it follows that the sum of the remaining two angles will be 90 degrees 90-68=22 The third angle is 22 degrees


How do you find a interior angle is without drawing a triangle in a shape?

You cannot.


The measure of an exterior angle of a triangle is120 degrees the interior angles that are not adjacent to this exterior angle are congruent find the measure of the interior angles of the triangle?

They are all 60 degrees.


If Two angle measurements in a triangle are 35 and 77 Explain how to find the third angle measure in the triangle?

The sum of the three angles of a triangle will always be 180 degrees. So to find the third angle, one must take 180 - 35 - 77. The answer would be 68


How do you find a 4th angle if a triangle is 180?

Any triangle has only 3 interior angles which add up to 180 degrees


Two angles of a triangle have measures of 59 degrees and 28 degrees. find the measure of the third angle.?

The third angle is 93 degrees


If two angles of a triangle are complementary find the number of degrees in the third angle?

90


How do you find a third angle?

I am guessing you mean you are given 2 of the 3 interior angles of a triangle and are asked for the 3rd. Well, it is a theorem that the 3 angles of a triangle add up to 180 degrees. So add the 2 given angles and subtract the sum from 180. to get the measure of the 3rd angle.


What is the measure of the third angle of a triangle if one angle measures 15 degrees and the other measures 85 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.


How do you find the third degree of a triangle?

The total of the three interior angles of any triangle is 180 degrees. If you know two of them, subtract both of them from 180 to calculate the third.


How do you find the x and y angles on a right triangle?

A right angle triangle has a 90 degree angle with two acute angles and the 3 interior angles add up to 180 degrees