Is this shape open or closed?

Classify the shape as two dimensional or three dimensional. Also write the name of the shape.

A figure is given below. Name the plane $(IMLG/IEFB/ ABCD/AEFD)$.

Rohini made this shape.

Mohini- Is it a closed shape or an open shape$?$

Rohini- It is a closed shape.

Mohini- How many sides are there$?$

Rohini - It has $6$sides.

Mohini made this.

But it is not the same as the one made by Rohini. So Mohini tried again. 

This is what she made.

Is it a closed shape with $6$sides$?$ _____ (Write: Yes/No)

Two intersecting planes intersect at a point.

How many different shapes can you make by changing the angle between the matchsticks in each of these? Try.

$5$matchsticks

How many different shapes can you make by changing the angle between the matchsticks in each of these? Try.

$8$matchsticks

How many triangles can be seen in this figure?

How many different shapes can you make by changing the angle between the matchsticks in each of these? Try.

$7$matchsticks

Classify the shape as two dimensional or three dimensional. Also write the name of the shape.

Rohini made this shape.

Mohini - Is it a closed shape or an open shape?

Rohini - It is a closed shape.

Mohini - How many sides are there?

Rohini - It has $6$sides.

Mohini made this.

But it is not the same as the one made by Rohini. 

Write the quadrants in which the following points lie:

$\left(-4,7\right)$

Give one example from your daily life for the following.

Plain surface.

How many different shapes can you make by changing the angle between the matchsticks in each of these? Try.

$10$matchsticks