CBSE Class 4 Mathematics Fun with Symmetry MCQs Set 01

Answer: (C) 5

Explanation:
1. Symmetrical numbers like 0 and 8 look exactly the same in a vertical mirror.
2. The number 5 is not symmetrical from left to right.
3. This means 5 will look backward and different when seen in a mirror.

Answer: (B) It creates equal weight distribution and balance

Explanation:
1. A paper airplane needs both sides to be equal to fly straight.
2. Symmetrical wings make sure the weight is balanced on both sides.
3. This helps the airplane stay steady and glide nicely in the air.

Answer: (A) Rectangle

Explanation:
1. A rectangle can be folded in half in two different ways.
2. You can fold it from top to bottom or from left to right.
3. This gives it two lines of symmetry, which is more than one.

Answer: (B) 8

Explanation:
1. Symmetrical means a shape can be cut into two matching parts.
2. If you fold or cut the number 8, both halves look the same.
3. The numbers 2, 7, and 3 do not have matching halves like 8.

Answer: (B) Sliding (translation)

Explanation:
1. In this activity, we cut out a shape and move it straight down.
2. Moving a shape without turning or flipping it is called translation.
3. Sliding helps the cat shapes fit together perfectly with no gaps.

Answer: (C) Spoon with a curve on one side only

Explanation:
1. Symmetrical items have matching halves on both sides.
2. A butterfly, a leaf, and a square can be divided into equal parts.
3. A spoon with a curve on only one side is uneven and has no matching halves.

Answer: (C) P

Explanation:
1. Letters like O, X, and H can be folded to make matching halves.
2. The letter P has a loop on the top and a straight line on the bottom.
3. There is no way to fold the letter P to make the two parts match.

Answer: (C) Cut shapes that are placed symmetrically relative to the fold line

Explanation:
1. When we fold paper, the fold line acts as the middle line.
2. Cutting next to the fold creates matching shapes on both halves.
3. This makes the design symmetrical when we open the paper.

Answer: (A) circle

Explanation:
1. A line of symmetry divides a shape into two matching parts.
2. You can fold a circle in half along any line through its center.
3. Since there are endless ways to do this, a circle has infinite lines.

Answer: (D) 8

Explanation:
1. A vertical mirror reflection flips things left to right.
2. If you hold the digit 8 in front of a mirror, it does not change.
3. This is because the left side of 8 is identical to its right side.

Answer: (B) T

Explanation:
1. A vertical line goes straight up and down.
2. If we draw a line down the middle of the letter T, both sides match.
3. Letters like E, G, and F do not have matching left and right sides.

Answer: (B) line symmetry

Explanation:
1. A butterfly has matching wings on the left and right sides.
2. If you draw a straight line down its middle, both halves are identical.
3. This is a clear example of line symmetry.

Answer: (A) They must have no gaps or overlaps

Explanation:
1. Tiling means fitting shapes together to cover a flat surface.
2. The shapes must fit perfectly next to each other.
3. There should be no empty spaces (gaps) and no shapes on top of each other (overlaps).

Answer: (B) Equilateral triangle

Explanation:
1. An equilateral triangle has three equal sides and three equal corners.
2. You can draw a fold line from each corner to the opposite side.
3. This gives us exactly three lines of symmetry.

Answer: (C) 8

Explanation:
1. A mirror image is what you see when an object is reflected.
2. When we hold 8 in front of a mirror, it looks exactly the same.
3. Numbers like 2, 9, and 5 look reversed and different in a mirror.

Answer: (D) The shape will have 6 sides

Explanation:
1. We start with a piece of paper that has 4 sides.
2. Making two cuts in the middle adds new edges inside the paper.
3. When unfolded, these cuts add 2 extra sides, creating a 6-sided shape.

Answer: (B) A line that divides a shape into two equal and matching halves

Explanation:
1. Imagine folding a paper shape in half.
2. If both sides of the fold line cover each other perfectly, that is symmetry.
3. The fold line is called the line of symmetry.

Answer: (C) Mirror

Explanation:
1. A mirror has a very shiny surface that reflects light.
2. When you stand in front of it, it shows a backward copy of yourself.
3. This backward copy is called a mirror image.

Answer: (D) You get a symmetrical cut on both sides when unfolded

Explanation:
1. Folding a sheet of paper creates a middle line.
2. Cutting next to the fold affects both layers at the same time.
3. When you open the sheet, both sides of the fold look exactly the same.

Answer: (B) ‘P’ flipped to the left

Explanation:
1. A mirror flips things horizontally from left to right.
2. The letter P has a loop on its right side.
3. In the mirror, that loop will point to the left instead of the right.

Answer: (C) Symmetry and patterns

Explanation:
1. This chapter explores how shapes can have matching halves.
2. It uses fun activities to teach lines of symmetry and mirror reflections.
3. Therefore, the main topic is symmetry and patterns.

Answer: (B) Isosceles triangle

Explanation:
1. An isosceles triangle has two sides that are equal in length.
2. You can only fold it in half one way to make the equal sides match.
3. This means it has only one line of symmetry.

Answer: (D) Infinite

Explanation:
1. A circle is perfectly round all the way around.
2. Any straight line drawn through its middle point folds it into matching halves.
3. You can draw endless lines like this, so the count is infinite.

Answer: (B) Circle

Explanation:
1. A circle does not have corners or straight edges.
2. Any straight cut passing through its center splits it into identical halves.
3. Since we can draw endless lines through the center, it has infinite lines of symmetry.

Answer: (C) 4

Explanation:
1. A square has four equal sides and four square corners.
2. You can fold it top-to-bottom, left-to-right, and along both diagonals.
3. Each of these folds creates matching halves, making 4 lines in total.

Answer: (B) A circle

Explanation:
1. A vertical mirror flips an object from left to right.
2. A circle is completely round and looks the same from all angles.
3. Flipping a circle does not change how it looks, so it stays exactly the same.

Answer: (B) To be readable in rear-view mirrors

Explanation:
1. Drivers ahead of an ambulance look at it through their car mirrors.
2. Mirrors flip words horizontally.
3. Writing the word backward on the ambulance makes it appear normal in the mirror.

Answer: (D) Stretching

Explanation:
1. Tiling patterns require identical tiles to cover a flat floor.
2. We can move tiles by sliding, turning (rotating), or flipping them.
3. Stretching would change the size of the tiles, which ruins the pattern.

Answer: (A) Folding paper, adding color drops and pressing

Explanation:
1. We put drops of water color on one half of a piece of paper.
2. Folding and pressing the paper copies the paint onto the other half.
3. Opening it up reveals a matching pattern on both sides of the fold line.

Answer: (C) Observing and collecting symmetrical objects in nature

Explanation:
1. Nature is full of beautiful shapes and designs.
2. Many items like leaves, butterfly wings, and flowers are symmetrical.
3. Collecting these items helps us see how math is present in nature.

Answer: (D) 808

Explanation:
1. A vertical mirror flips an object from left to right.
2. In 808, the left side has an 8, the center is 0, and the right is 8.
3. Since 8 and 0 are symmetrical, the mirror image looks exactly the same.