Can you find the key in the picture below?

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

How many triangles can you find in this given picture?

Out of four images which one is the odd one out?

Count the number of triangles in the given picture.

Identify the 10 differences between the two given pictures.

Count the number of triangles in the below picture?

In the given picture, you can find a square in the centre and four open squares. Can you form three closed squares by just moving three sticks from their positions respectively?

By adding four matchsticks, can you divide the square shown in the picture into two equal parts?

Can you find the mistake in the below statement?