Area of a triangle

[gmatwork]

Area of a triangle given the three vertices of the triangle (x1, y1 ), (x2, y2 ) and (x3, y3 )

Area = 1/2 * (x1*(y2-y3) + x2 *(y3-y1) x3*(y1-y2))

Can we use this equation to find the area of a triangle always?

[adiagr]

Area of a triangle given the three vertices of the triangle (x1, y1 ), (x2, y2 ) and (x3, y3 )

Area = 1/2 * (x1*(y2-y3) + x2 *(y3-y1) x3*(y1-y2))

Can we use this equation to find the area of a triangle always?

While formula is correct, GMAT will seldom ask formula based questions. Study equilateral and isosceles triangle property along with key properties of a right angled triangle......That should be sufficient....

Aditya

[jnelson0612]

While formula is correct, GMAT will seldom ask formula based questions. Study equilateral and isosceles triangle property along with key properties of a right angled triangle......That should be sufficient....

Aditya

I agree with this. Do know the 30-60-90 and 45-45-90 triangle theorems also, as well as pythagorean theorem.

[tansikamalar]

The measure of total space occupied by a triangle.
Formula:
Area of triangle = 1/2(bh). For more information,refer this link [spam deleted]

[tim]

no, actually just know the formula. there's no need to study a separate web page just to learn such a simple formula..