Question

Which of the following is a theorem ?

• A. Sum of the angles of a triangle is 180°
• B. Sum of the angles of a leniar pair is 180°
• C. If equals are subtracted from equals , then the remaing are the same
• D. There can be one and only one straight line joining two points

Answer 1

Answer:

A. Sum of the angles of a triangle is 180°

Sum of the angles of a triangle is 180° - is a theorem