Notes On Area of Triangle - CBSE Class 10 Maths
Area of triangle =  1 2 x base x  altitude.

If a, b and c are sides of a triangle then its area is given by herons formula s( s - a)(s - b)(s - c) .

area of triangle, herons formula, area of scalene triangle, area of triangle with sides a,b,c

Area of a triangle even if its three vertices are given. If (x1, y1), (x2, y2) and (x3, y3) are the vertices of a triangle then its area is given by   1 2 [x1(y2 - y3) + x2( y3 - y1)+ x3(y1 - y2)] square units.

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

If three points (x1, y1), (x2, y2) and (x3, y3) are collinear then [x1(y2 - y3) + x2( y3 - y1)+ x3(y1 - y2)] = 0.



area of triangle, area of triangle with 3 vertices, area of triangle when coordinates are given, area, collinear points, points on the same line

Summary

Area of triangle =  1 2 x base x  altitude.

If a, b and c are sides of a triangle then its area is given by herons formula s( s - a)(s - b)(s - c) .

area of triangle, herons formula, area of scalene triangle, area of triangle with sides a,b,c

Area of a triangle even if its three vertices are given. If (x1, y1), (x2, y2) and (x3, y3) are the vertices of a triangle then its area is given by   1 2 [x1(y2 - y3) + x2( y3 - y1)+ x3(y1 - y2)] square units.

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

If three points (x1, y1), (x2, y2) and (x3, y3) are collinear then [x1(y2 - y3) + x2( y3 - y1)+ x3(y1 - y2)] = 0.



area of triangle, area of triangle with 3 vertices, area of triangle when coordinates are given, area, collinear points, points on the same line

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