128.6
180.0
231.4
The area of this triangle with three vertices (x₁, y₁) , (x₂, y₂) and (x₃, y₃) is,
A = 1/2 [[(x₁ (y₂ - y₃) + x₂ (y₃ - y₁) + x₃ (y₁ - y₂))]
We have to give that,
The three vertices of the triangle are,
(x₁, y₁) , (x₂, y₂) and (x₃, y₃)
Since a triangle is a three-sided polygon, which has three vertices and three angles it has the sum of 180 degrees.
Hence,
The area of this triangle with three vertices (x₁, y₁) , (x₂, y₂) and (x₃, y₃) is,
A = 1/2 [[(x₁ (y₂ - y₃) + x₂ (y₃ - y₁) + x₃ (y₁ - y₂))]
So, the Formula is,
A = 1/2 [[(x₁ (y₂ - y₃) + x₂ (y₃ - y₁) + x₃ (y₁ - y₂))]
Learn more about the triangle visit;
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2,500 g, 250 kg
3.4 kg, 3,400 g
480 g, 4.8 mg
(x, y)→(−y, x)
B.) y + 7 = -3 (x-2)
C.) y + 2 = -3 (x-7)
D.) y - 7 = -3 (x+2)