Question 1
Find the odd figure out based on symmetry properties.
Figure A:
Figure B:
Figure C:
Figure D:
Figure E:
Step-by-step Solution:
Step 1: Analyze symmetry in all figures
- Check each figure for lines of symmetry
- Determine if figures have rotational or reflective symmetry
Step 2: Identify common symmetry property
- Figures other than D all possess clear symmetry
- These shapes have at least one line of symmetry (vertical, horizontal, or both)
- Circles have infinite lines of symmetry
- Regular polygons have multiple lines of symmetry
Step 3: Detect the asymmetric figure
- Figure D is an irregular polygon with no lines of symmetry
- This figure cannot be divided into mirror-image halves
Step 4: Verification
- Four figures: Symmetric shapes
- One figure: Asymmetric shape (Figure D)
Symmetry Check Method:
- Draw imaginary lines through the center
- Check if both halves are mirror images
- Figure D fails this test
Common Mistake: Confusing similar-looking shapes with truly symmetric ones.
Step 1: Analyze symmetry in all figures
- Check each figure for lines of symmetry
- Determine if figures have rotational or reflective symmetry
Step 2: Identify common symmetry property
- Figures other than D all possess clear symmetry
- These shapes have at least one line of symmetry (vertical, horizontal, or both)
- Circles have infinite lines of symmetry
- Regular polygons have multiple lines of symmetry
Step 3: Detect the asymmetric figure
- Figure D is an irregular polygon with no lines of symmetry
- This figure cannot be divided into mirror-image halves
Step 4: Verification
- Four figures: Symmetric shapes
- One figure: Asymmetric shape (Figure D)
Symmetry Check Method:
- Draw imaginary lines through the center
- Check if both halves are mirror images
- Figure D fails this test
Common Mistake: Confusing similar-looking shapes with truly symmetric ones.