It is called a 30-60-90 triangle and it is a right triangle whose sides are always in the ratio:
1:2:Square root (3).
A right angles triangle, as one of the angles in the triangle is 90 degrees.
It's called an equilateral triangle. All 3 sides are equal length and all 3 angles are equal (60 degrees)
A triangle with all three angles measuring 60 degrees is called an equilateral triangle.
They are then complementary angles
If all of the 3 acute angles are 60 degrees then it is an equilateral triangle if not then it could be a scalene triangle.
A right angles triangle, as one of the angles in the triangle is 90 degrees.
It's called an equilateral triangle. All 3 sides are equal length and all 3 angles are equal (60 degrees)
They are called obtuse angles.
A triangle with angles 103 degree, 20 degree, and 57 degree is called
Equilateral, meaning all sides of equal length. The triangle is also equiangular, having all three angles of equal measure. Since the interior angles of a triangle sum to 180 degrees, each angle measures 60 degrees.
A triangle with all three angles measuring 60 degrees is called an equilateral triangle.
They are called complementry angles
They are then complementary angles
If all of the 3 acute angles are 60 degrees then it is an equilateral triangle if not then it could be a scalene triangle.
A scalene triangle
The instrument for measuring the angles of a triangle is called a protractor.
A triangle with all angles congruent are called equilateral. Each angle is 60 degrees.