Answer:
the correct answer is a) 180°.
Step-by-step explanation:
The sum of all angles in a triangle is always equal to 180°. This property holds for all triangles, including rigging triangles.
To understand why this is the case, we can break it down step by step:
1. A triangle is a polygon with three sides and three angles.
2. Each angle in a triangle can be measured in degrees.
3. Let's assume the three angles in a triangle are A, B, and C.
4. The sum of all three angles equals the total degrees in a triangle: A + B + C = Total degrees in a triangle.
5. By definition, the total degrees in a triangle is 180°.
Therefore, the correct answer is a) 180°.
