CBSE Class 10 Mathematics
Question 23 of 32
Coordinate Geometry — Question Ex 7.3 Q3
Back to all questions Ex 7.3 Q3
Question Find the area of the triangle formed by joining the mid-points of the sides of the triangle whose vertices are (0, -1), (2, 1) and (0, 3). Find the ratio of this area to the area of the given triangle.
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CBSE Class 10 Coordinate Geometry — Complete Guide
Coordinate Geometry is a formula-based scoring chapter worth 6 marks. All questions are direct formula applications.
Quick Revision: Key Formulae
- Distance: d = √[(x2−x1)² + (y2−y1)²]
- Section: P = [(mx2+nx1)/(m+n), (my2+ny1)/(m+n)]
- Midpoint: M = [(x1+x2)/2, (y1+y2)/2]
- Area: ½|x1(y2−y3) + x2(y3−y1) + x3(y1−y2)|
- Collinear: Area = 0
Most Important Questions
- Find distance between two points
- Find ratio in which a point divides a line segment
- Find area of triangle given vertices
- Prove collinearity using area formula
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