Basic concept of mathematics

1. TRIANGLES

2. Triangles
 A triangle is a three sided closed polygon .
 Two triangles are said to be congruent, if they have the same
shape and the same size.
 Two triangles having the same shape (but not necessarily the same size)
are called similar triangles.

3. Some Similar figures

4. Similar triangles
 Two triangles are said to be similar if their corresponding angles are equal
and their corresponding sides are proportional.

5. Similar triangles

6. Now some
Basic theorems
Continue….

8. Now some
Examples
Continue….

9. NOW…

10. Hence Proved…….

11. Now….

12. [Basic proportionality Theorem]
[Basic proportionality Theorem]
Hence Proved…….