#1**+1 **

First one

x = 180 - 64 - 58 = 58°

Acute ..Isosceles

Second one :

We have an equilateral triangle ...each interior angle = 60° = x

Acute...Equiangular....Equilateral....Isosceles [ some people will debate the "Isosceles" classification...."Isosceles" is often defined as a triangle having EXACTLY two sides of equal length ]

Last one

x = [180 - 48 ] / 2 = 132 / 2 = 66°

Acute...Isosceles

CPhill
Aug 29, 2018