Copyright © 2020 Multiply Media, LLC. obtuse scalene (C), 2) By the types of Primarily there are three types of triangle, namely: Acute Triangle: This is a triangle in which all the angles are acute. Triangles are classified in 2 ways- area = square root (s (s - 4) (s - 5) (s - 6)) height (also called the altitude), and dividing that by 2. Does Jerry Seinfeld have Parkinson's disease? What is the hink-pink for blue green moray? angles they have: Since all 3 angles are less than 90° all equilateral //-->, All triangles have 3 sides and 3 angles which always add up to 180°. acute triangle - all 3 angles are acute (less than 90°) area = square root (7.5 (3.5) (2.5) (1.5)) Why don't libraries smell like bookstores? If you need a more advanced triangle calculator then click here. 3 Triangle Area Formulas. google_ad_width = 300;