To solve this, use the fact that the sum of all three angles, in a triangle, is 180 degrees.
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
105 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
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
It is: 90 -27 = 63 degrees