Answer:
180 degrees
Step-by-step explanation:
Triangles have 3 sides,
A triangle can only have one right angle (90 degrees),
Equilateral triangles have 3 equal sides (60 degrees x 3)
Think of it like this:
A straight line has an angle of 180 degrees,
A triangle has 3 straight lines but only one straight line makes up the degrees of all angles added up.
