Well, honey, the sum of angles in a triangle is always 180 degrees. So, if you already have angles measuring 45 and 85 degrees, just subtract their sum from 180 to find the measure of the third angle. In this case, the third angle would be 50 degrees. Easy peasy lemon squeezy!
77 degrees
63 degrees
Any 2 angles that add up to 90 degrees because there are 180 degrees in a triangle and a right angle measures 90 degrees
If you mean the golden rectangle then each of its 4 interior angles measures 90 degrees but if you mean an equilateral triangle then each of its 3 interior angles measures 60 degrees
To solve this, use the fact that the sum of all three angles, in a triangle, is 180 degrees.
Each of the 3 angles measures 60 degrees. There are 180 degrees in a triangle.
77 degrees
The missing angle measure is 100 degrees.
The sum of the measures of the angles in any triangle in the plane is 180 degrees. If two angles are 15 and 85 then their sum is 100 degrees and 180-100=80 degrees
63 degrees
The other acute angle in that triangle is 40 degrees.
In a triangle, the sum of the measures of the angles is 180 degrees.
Any 2 angles that add up to 90 degrees because there are 180 degrees in a triangle and a right angle measures 90 degrees
If you mean the golden rectangle then each of its 4 interior angles measures 90 degrees but if you mean an equilateral triangle then each of its 3 interior angles measures 60 degrees
To solve this, use the fact that the sum of all three angles, in a triangle, is 180 degrees.
In an isosceles triangle, two angles are equal. Since the angles provided are 54 degrees and 63 degrees, the equal angles must be 54 degrees. The sum of the angles in any triangle is 180 degrees. Thus, the measure of the third angle is calculated as follows: 180 - 54 - 54 = 72 degrees.
105 degrees