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Let the 3 vertices of the triangle be 3 points. Each point is an ordered pair. Write the 3 points as rows of a 3x3 matrix with each point being a row and the third entry in each row is 1. For example if one vertex was located at (1,2) The row of the matrix would be 1 2 1
Do the same with all the vertices.
Then take 1/2 the determinant of that matrix and that is the area. If it is a negative number, then take the positive value. It will be negative or positive depending on the order of the rows, but area is always positive.
What else can I help you with?
How do you find angles in a triangle using only the lengths?
By using trigonometry
How do you find trhe area of a triangle using fractions?
The answer will depend on the shape of the triangle and what is known about it.
Given the sides of a triangle how do you find the height?
By using sides we get area of triangle and then using (1/2)heightxbase we get height.
How do you find the area of a triangle using fraction?
get a protracter
How do you find the heighth of a triangle?
To find the height of a triangle, you can use the formula: height = (2 * area) / base. The base of the triangle is one side of the triangle to which the height is perpendicular. The area can be calculated using different methods depending on the information available, such as using the lengths of the sides and Heron's formula or using the base and the height.
How do you find the perimeter of a right angled triangle using the area?
how to find the perimeter of a right angled triangle using the area
Find out about the objective and subjective determinants consumption?
subjective and objective determinants of consumption
How do you find angles in a triangle using only the lengths?
By using trigonometry
How do you find trhe area of a triangle using fractions?
The answer will depend on the shape of the triangle and what is known about it.
Given the sides of a triangle how do you find the height?
By using sides we get area of triangle and then using (1/2)heightxbase we get height.
How do you find the area of a triangle using fraction?
get a protracter
How do you find the heighth of a triangle?
To find the height of a triangle, you can use the formula: height = (2 * area) / base. The base of the triangle is one side of the triangle to which the height is perpendicular. The area can be calculated using different methods depending on the information available, such as using the lengths of the sides and Heron's formula or using the base and the height.
How do you find the height of an equilateral triangle?
By using Pythagoras' theorem
How do you find height of an equilateral triangle?
By using Pythagoras' theorem.
How do you find the altitude of an equalateral triangle?
By using Pythagoras' theorem.
How do you find the mising side of triangle?
By measuring it or using trigonometry.
How do you find the reference angles for cos?
by using rightangle triangle
