3. Coordinate Geometry
The chapter focuses on the Cartesian coordinate system and various fundamental concepts of coordinate geometry, including point representation, distance calculations, midpoint determination, the section formula, and area calculation of triangles in a plane. These concepts are essential for understanding how to use algebraic methods to solve geometric problems effectively.
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Sections
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What we have learnt
- The Cartesian coordinate system consists of axes and an origin for representing points.
- The distance between two points can be calculated using the distance formula derived from the Pythagorean theorem.
- The midpoint and section formulas provide methods to find specific points along line segments in a coordinate plane.
- The area of a triangle can be calculated using a determinant formula based on its vertices' coordinates.
Key Concepts
- -- Cartesian Coordinate System
- A system that uses two perpendicular axes to define the position of points in a 2-dimensional space.
- -- Distance Formula
- A formula used to find the distance between two points in the Cartesian plane, given by √((x2-x1)² + (y2-y1)²).
- -- Midpoint Formula
- A formula used to find the midpoint of a line segment between two points, calculated as ((x1+x2)/2, (y1+y2)/2).
- -- Section Formula
- A formula that determines the coordinates of a point dividing a segment in a specific ratio.
- -- Area of a Triangle
- The area can be computed using a formula involving the coordinates of its vertices, typically using determinants.
Additional Learning Materials
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