Shapes
Mirror images of arrows, dots on shapes, symmetric vs non-symmetric.
Shapes
Mirror Images — Shapes
NCERT anchor
Joyful Mathematics 2 — Shadow Story / Shapes Around Us. Flipping shapes and arrows connects to shadow and symmetry activities in Joyful Mathematics 2.
What you'll learn
- Shapes flip left ↔ right in a side mirror.
- Arrows point the opposite horizontal direction.
- Symmetric shapes (circle, square) may look unchanged.
Key concepts
Verbal: In a side mirror, shapes flip left ↔ right — a right-pointing arrow becomes left-pointing.
Symbolic: → becomes ←. Symmetric shapes (circle, square) may look unchanged.
Level 1 — Arrow
→ in mirror becomes ← (horizontal flip).
Level 1 — Triangle pointing right
Points left in mirror.
Level 2 — Heart / asymmetric shapes
Bump moves to the other side.
Level 2 — Fold test
Fold paper on the mirror line — both halves should match for symmetric shapes.
Indian real life
Connect this idea to your daily routine at home, school, or the local market in India.
Worked example
A flag points to the right. Mirror image?
Step 1 — Mirror flips left-right
Step 2 — Right-pointing → **left-pointing**
Answer: flag points left
Common mistakes
| Mistake | Why | Fix |
|---|---|---|
| Vertical flip | Wrong axis | Side mirror = horizontal flip |
| Rotating 180° | Not mirror | Flip across line |
| Circle changes | Circle symmetric | Circle stays same |
Quick check
- Mirror of ↑ (up arrow)? Still ↑ (symmetric vertically)
- Mirror of ▶?
- Draw a shape and its mirror.
Stretch: Does a heart shape look the same in a mirror? Fold paper to test symmetry.
Revision tip: Use an arrow cut-out — hold it to a mirror and confirm horizontal flip, not upside-down.
Open the Practice tab for graded questions on Mirror Images — Shapes.
Key Takeaways (TL;DR)
- NCERT anchor
- What you'll learn
- Key concepts
- Worked example
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