Answer
The first thing to know about the angles is that the sum of the angles in a triangle is equal to 180 degrees.
Then, the exterior angle of a triangle formed by two segments of the triangle is equal to the sum of the two interior angles opposite that interior angle.
Then, there are special triangles such as
- The equilateral triangle
All the angles of this triangle are equal to one another. Since the sum of the angles in a triangle is 180 degrees, each angle of the equilateral triangle is 60 degrees.
- The isoscelles triangle
The two base angles of this triangle are equal to each other.
- The right angled triangle.
This triangle has one of its angles equal to 90 degrees.
Hope this Helps!!!