Class Notes
Topic: SHAPES AND DESIGNS
CHAPTER-5
Class: III
Subject: MATHEMATICS
3- DIMENSIONAL SHAPES (3-D)
S.NO.
NAME & SHAPE
EXAMPLES
EDGES, FACES, CORNERS
1.
It has 6 faces, 12 edges
and 8 corners.
ICE CUBE
DICE
CUBE
2.
It has 6 faces, 12 edges
and 8 corners.
BRICK
MATCH BOX
CUBOID
3.
It has 1 curved face, no
edges and no corners.
SPHERE
BALL
EARTH/GLOBE
4.
1.
CONE
BIRTHDAY CAP
It has 2 faces (1 curved
and 1 flat), 1 edge and 1
corner.
ICE CREAM CONE
5.
2. It has faces (1 curved
and 2 flat), 2 edges and
no corners.
BOTTLE
CELL
CYLINDER
(Note- *Images given with examples* are only for better understanding no need to draw in the
notebooks.)
(Note- only for understanding no need to draw)
Q.4 What is an edge?
Ans. Side of any figure is called edge.
Type of edges
1. Straight edge
2. Curved edge
Q.5 What is corner?
Ans. Meeting point of edge/side is called corner.
Q.6 Name three objects with:
1. Only straight edges- Book , Table , Blackboard
2. Only curved edges- Coin , Wheel , Bottle’s cap
3. Both straight and curved edges- Fan , Spoon , T.V. Remote
Q.6 What shape you will get if you will trace the outline:
1.
2.
3.
4.
5.
6.
7.
8.
A tyre
A glass tumbler
An ice cube
A dice
A bottle cap
A coin
A post card
A match box
-
Circle
Circle
Square
Square
Circle
Circle
Rectangle
Rectangle
9. An egg
10. A Roti
- Oval
- Circle
Q.7 Identify the shape, number of corners and number of edges of the following objects:
NAME OF
OBJECTS
SHAPE
HAS CORNERS?
NO. OF EDGE(S)
NO
NO. OF
CORNER(S)
0
Sphere
Cone
YES
1
1
Cylinder
NO
0
2
Cube
YES
8
12
0
BALL
CARROT
BUCKET
DICE