Use the figure to the right to (a) identify the triangle as scalene, isosceles, or equilateral and as (b) acute parallel lines) on two or more sides indicate that the marked sides are of equal length (a) Is this triangle scalene, isosceles, or equilateral? Isosceles Equilateral Scalene (b) Is this triangle acute, obtuse, or right? O Right O Acute O Obtuse