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Selina solutions

CHAPTERS

1. Chapter 1- Rational and Irrational Numbers

2. Chapter 2- Compound Interest [Without Using Formula

3. Chapter 3- Compound Interest [Using Formula

6. Chapter 6- Simultaneous Equations

7. Chapter 7- Indices [exponents]

9. Chapter 9- Triangles [Congruency in Triangles]

10. Chapter 10- Isosceles Triangle

12. Chapter 12- Mid-Point and Its Converse

13. Chapter 13- Pythagoras Theorem

14. Chapter 14- Rectilinear Figures

15. Chapter 15- Construction of Polygons

19. Chapter 19- Mean and Median

20. Chapter 20- Area and Perimeter of Plane Figures

22. Chapter 22- Trigonometrical Ratios

23. Chapter 23- Trigonometrical Ratios of Standard Angles

24. Chapter 24- Solution Of Right Triangles

25. Chapter 25- Complementary angles

26. Chapter 26- Co-ordinate Geometry

A (-2, 2), B (8, 2) and C (4, -4) are the vertices of a parallelogram ABCD. By plotting the given points on a graph paper; find the co-ordinates of the fourth vertex D.

Also, form the same graph, state the co-ordinates of the mid-points of the sides AB and CD

Given, A(2,-2), B(8,2) and C(4,-4) are the vertices of the parallelogram ABCD

Joining A, B, C, and D we get the parallelogram ABCD.

According to the graph, we get, D(-6,4)

From the graph,

The coordinates of the mid-point of AB is E(3,2)

The coordinates of the mid-point of CD is F(-1,-4)

Chapter 1- Rational and Irrational Numbers

Chapter 2- Compound Interest [Without Using Formula

Chapter 3- Compound Interest [Using Formula

Chapter 6- Simultaneous Equations

Chapter 7- Indices [exponents]

Chapter 9- Triangles [Congruency in Triangles]

Chapter 10- Isosceles Triangle

Chapter 12- Mid-Point and Its Converse

Chapter 13- Pythagoras Theorem

Chapter 14- Rectilinear Figures

Chapter 15- Construction of Polygons

Chapter 20- Area and Perimeter of Plane Figures

Chapter 22- Trigonometrical Ratios

Chapter 23- Trigonometrical Ratios of Standard Angles

Chapter 24- Solution Of Right Triangles

Chapter 25- Complementary angles

Chapter 26- Co-ordinate Geometry

A (-2, 2), B (8, 2) and C (4, -4) are the vertices of a parallelogram ABCD. By plotting the given points on a graph paper; find the co-ordinates of the fourth vertex D.

Also, form the same graph, state the co-ordinates of the mid-points of the sides AB and CD

Given, A(2,-2), B(8,2) and C(4,-4) are the vertices of the parallelogram ABCD

Joining A, B, C, and D we get the parallelogram ABCD.

According to the graph, we get, D(-6,4)

From the graph,

The coordinates of the mid-point of AB is E(3,2)

The coordinates of the mid-point of CD is F(-1,-4)

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