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Put the three points in a matrix with the last column with ones. Then find the determinant, then multiple by .5
Example:
(1,1) (2,4)(4,2)
1 1 1
2 4 1
4 2 1
The determinant is: [(1*4*1)+(1*1*4)+(2*2*1)]-[(1*4*4)+(1*2*1)+(1*2*1)]=12-20=
-8
Therefore you must multiple by -.5= 4
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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
What is the area of a right triangle that has legs 7 cm and 4 cm long?
The area of a right triangle that has legs 7 cm and 4 cm long can be calculated using the fact that a right triangle is half of a rectangle. The area of a rectangle is l*h, so the area of a right triangle is l*h/2. In this case, the area is 14 cm^2.
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What is the area of a triangle 6cm by 8cm?
The area of triangle is : 24.0
How does one calculate the area of a triangle?
The area of a triangle can be calculated with one main formula. That is, A=(b*h)/2, where A is the area of the triangle, b is the base of the triangle, and h is the height of the triangle.
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.
What is the area of the triangle ABC with vertices A at -1 4 B at 1 -2 and C at 5 1?
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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
What is the area of an equillatoral triangle?
The area of ANY triangle can be found using the formula: Area = Base of triangle * (1/2) * Height of triangle The height of a triangle is measured from the "bottom", or base of the triangle straight up to the top "corner". This measurement is inside the triangle. For example: An equilateral triangle has all 3 sides the same. (See the word equal?) Using your numbers, plug them into the formula and figure out what the area of your triangle is.
How do you find the area of a triangle using cotangent?
(c2) / (2 cot A + cot B) = Area of Triangle ABC
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.
How do you find the area of a triangle using fraction?
get a protracter
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 areas of triangle using determinants?
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.
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It depends on the relationship between the triangle and the square!
What is the area of a triangle with 7cm6cm3cm?
Using trigonometry the angles of the triangle are 98.4 degrees, 58.4 degrees, 25.2 degrees and with an area of 8.94 square cm
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