What are the six parts of a triangle?

Complete the following :

A triangle is said to be an equilateral triangle if _____

Complete the following

A triangle is said to be an obtuse triangle if _____.

Correct the incorrect statement :

In a right triangle , the sum of the two acute angles is $180°$

Write Yes or No for the following:

In a triangle , all angles can be more than $60°$_____

Write Yes or No for each of the following:

In a triangle,all angles can be less than $90°$_____

The figure formed by joining three non -collinear points is called a _____.