AnimGロゴAnimG

Shapes & Symmetry

対象: Primary Schoolカテゴリ: Math

説明

Four common polygons (triangle, square, pentagon, hexagon) are introduced one at a time. For each shape a dashed symmetry line is drawn and the shape is reflected across it. The square also demonstrates rotational symmetry with a spin animation.

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Shapes & Symmetry

Description

Four common polygons (triangle, square, pentagon, hexagon) are introduced one at a time.
For each shape a dashed symmetry line is drawn and the shape is reflected across it.
The square also demonstrates rotational symmetry with a spin animation.

Phases

# Phase Name Duration Description
1 Title card 3 s Title "Shapes & Symmetry" fades in
2 Triangle + reflection 7 s Triangle appears; dashed line; right half fades/reflects
3 Square + reflection 7 s Square; dashed line; half reflects; rotational spin
4 Pentagon + reflection 6 s Pentagon; dashed vertical line; half reflects
5 Hexagon + reflection 6 s Hexagon; dashed vertical line; half reflects
6 Summary gallery 5 s All four shapes shown small side by side; fade out

Layout

+--------------------------------------------------+
|             Shapes & Symmetry                    |
|                                                  |
|   [shape name label]                             |
|                                                  |
|        [polygon - center stage]                  |
|        |  (dashed symmetry line)                 |
|                                                  |
|   [symmetry note: "Line Symmetry" / "Rotational"]|
+--------------------------------------------------+

Area Descriptions

Area Content Notes
Top banner Title Large yellow text
Center Polygon shape Large, bright outline
Dashed line Symmetry axis White dashed line
Highlighted half Reflected / colored half Semi-transparent fill
Bottom label Shape name + symmetry type White text

Assets & Dependencies

  • Fonts: Manim default (Text), LaTeX (MathTex)
  • Colors: YELLOW (title), CYAN/GREEN/ORANGE/PINK (shape fills), WHITE (dashed lines)
  • Background: #1a1a2e
  • Manim version: ManimCE 0.19.1

Notes

  • Shapes built with RegularPolygon (n=3,4,5,6).
  • Reflection is achieved by creating a copy, flipping it with .flip(RIGHT), animating with Transform.
  • Dashed line uses DashedLine.
  • Rotational symmetry: square.animate.rotate(PI/2) repeated 4 times.