What is the area of a triangle with sides of length 1, 2, and 3? Trigonometry Triangles and Vectors Area of a Triangle 1 Answer George C. Dec 27, 2015 0, though I'm not sure you should call it a triangle. Explanation: 1+2 = 3, so this 'triangle' is flat. Answer link Related questions How do you find the area of a triangle with 3 sides given? What is the area of a equilateral triangle with a side of 12? How do you find the area of a triangleABC, if angleC = 62^@, b = 23.9 , and a = 31.6? How do you find the area of a triangleGHI, if angleI = 15^@, g = 14.2 , and h = 7.9? What is Heron's formula? When do you use Heron's formula to find area? How do you find the area of a triangle ABC, if a = 23, b = 46 , and c = 41? Question #f2e4c How do you find the area of the triangle given c= 4, A= 37 degrees, B= 69 degrees? How do you find the area of the triangle given C=85 degrees, a= 2, B= 19 degrees? See all questions in Area of a Triangle Impact of this question 2473 views around the world You can reuse this answer Creative Commons License