Section Formula | Coordinate Geometry Class 9 Math | CBSE Board Prep | LIVE |
Unlock the secrets of Coordinate Geometry with this comprehensive Class 9 Math video from Infinity Learn 9&10! Perfect for CBSE Board Preparation, this lesson focuses on:
🔹 Section Formula – The Section Formula is used to find the coordinates of a point that divides a line segment joining two points A(x1,y1) and B(x2,y2) in a given ratio m:n.
🔹 Mid-Point Formula – The Mid-Point Formula is a special case of the section formula where the line segment is divided exactly in half.
🔹 Area of a Triangle (Using Coordinates) – If the vertices of a triangle are A(x1,y1), B(x2,y2), and C(x3,y3), the area is calculated using the determinant (shoelace) method.
🔹Area of a Quadrilateral (Using Coordinates) - To find the area of a quadrilateral, divide it into two triangles and use the triangle area formula for both parts. If the vertices are A(x1,y1), B(x2,y2), C(x3,y3), and D(x4,y4), then:
Area of Quadrilateral=Area of △ABC+Area of △ACD
Whether you're revising for exams or building a strong foundation, this video simplifies complex concepts with clear explanations and step-by-step examples. Ideal for CBSE Class 9 students aiming for top marks!
Boost your confidence in Coordinate Geometry — start learning now with Infinity Learn!
FAQs
►Why do we take k-1 in section formula?
►What are the formulas of coordinate geometry?
►What is the area of a triangle with 3 sides?
►How do you find the area of a triangle and quadrilateral?
✦section formula
✦section and midpoint formula
✦section formula and midpoint formula
✦coordinate geometry class 9
✦area of triangles
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