Summary

Videos

References

Area of triangle = $\frac{\text{1}}{\text{2}}$ x base x altitude.

If a, b and c are sides of a triangle then its area is given by herons formula $\sqrt{\text{s( s - a)(s - b)(s - c)}}$^{ }.

Area of a triangle even if its three vertices are given. If (x_{1}, y_{1}), (x_{2}, y_{2}) and (x_{3}, y_{3}) are the vertices of a triangle then its area is given by $\frac{\text{1}}{\text{2}}$[x_{1}(y_{2} - y_{3}) + x_{2}( y_{3} - y_{1})+ x_{3}(y_{1} - y_{2})] square units.

If the area of triangle is zero then the points are called collinear points.

If three points (x_{1}, y_{1}), (x_{2}, y_{2}) and (x_{3}, y_{3}) are collinear then [x_{1}(y_{2} - y_{3}) + x_{2}( y_{3} - y_{1})+ x_{3}(y_{1} - y_{2})] = 0.

If a, b and c are sides of a triangle then its area is given by herons formula $\sqrt{\text{s( s - a)(s - b)(s - c)}}$

Area of a triangle even if its three vertices are given. If (x

If the area of triangle is zero then the points are called collinear points.

If three points (x

Area of triangle = $\frac{\text{1}}{\text{2}}$ x base x altitude.

If a, b and c are sides of a triangle then its area is given by herons formula $\sqrt{\text{s( s - a)(s - b)(s - c)}}$^{ }.

Area of a triangle even if its three vertices are given. If (x_{1}, y_{1}), (x_{2}, y_{2}) and (x_{3}, y_{3}) are the vertices of a triangle then its area is given by $\frac{\text{1}}{\text{2}}$[x_{1}(y_{2} - y_{3}) + x_{2}( y_{3} - y_{1})+ x_{3}(y_{1} - y_{2})] square units.

If the area of triangle is zero then the points are called collinear points.

If three points (x_{1}, y_{1}), (x_{2}, y_{2}) and (x_{3}, y_{3}) are collinear then [x_{1}(y_{2} - y_{3}) + x_{2}( y_{3} - y_{1})+ x_{3}(y_{1} - y_{2})] = 0.

If a, b and c are sides of a triangle then its area is given by herons formula $\sqrt{\text{s( s - a)(s - b)(s - c)}}$

Area of a triangle even if its three vertices are given. If (x

If the area of triangle is zero then the points are called collinear points.

If three points (x