Question

I have 3 Q's:

1. Why must every equilateral triangle also be an acute triangle?
2. Why can't a triangle have more than one right angle?
3. Why can't a triangle have more than one obtuse angle?

Answer 1

remember:sum of the angles of a triangle=180
1. because an equi. has 3 equal angles so each must be 60
2. if a triangle had more than 2 right angles there sum would be 180 which leaves nothing for the 3rd angle
3 2 obtuse angles have a sum more than 180 so nothing left for the 3rd angle