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.
If two angles of a triangle each measure 45 degrees, the third angle measures 90 degrees. This is because of the Triangle Sum Theorem - The sum of the measure of the interior angles of a triangle is 180 degrees. If you know that two of the angles total to be 90 degrees, you can subtract that 90 degrees from the total 180. The result is 90 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.
Any 2 angles that add up to 90 degrees because there are 180 degrees in a triangle and a right angle measures 90 degrees
In a triangle, the sum of the measures of the angles is 180 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.
It is: 90 -27 = 63 degrees