Question

1101011010001101010101

Answer 1

equilateral triangle means all 3 angles are the same.

Answer 2

have you learned what the 3 angles in a triangle add up to ?

Answer 3

360

Answer 4

only 180. The Greeks proved it 2500 or 3000 years ago. And it's still true.

Answer 5

almost. The words are confusing.
I would say the 3 sides of an equilateral triangle are congruent
and all three angles are each equal to 60 degrees

Answer 6

Or we can tweak your words:
an equilateral triangle has 3 equal sides
The angles of an equilateral triangle each measures 60 degrees