Figure it Out (Page 219)
1. Do you see any line of symmetry in the figures at the start of the chapter? What about in the picture of the cloud?
Answer:
- Flower: Yes, it has 6 lines of symmetry (one through each petal).
- Rangoli: Yes, it has 4 lines of symmetry.
- Butterfly: Yes, it has 1 vertical line of symmetry.
- Pinwheel: No, it has no line of symmetry (it has rotational symmetry, but you cannot fold it to match).
- Cloud: No, clouds are irregular shapes and do not have a line of symmetry.
2. For each of the following figures, identify the line(s) of symmetry if it exists.
Referencing the shapes provided in the textbook (Kite, Rhombus, Trapezoid, Triangle).
Solution:
- Shape 1 (Arrowhead): 1 horizontal line of symmetry.
- Shape 2 (Kite): 1 vertical line of symmetry.
- Shape 3 (Isosceles Trapezoid): 1 vertical line of symmetry.
- Shape 4 (L-Shape): 1 line of symmetry along the diagonal corner (assuming legs are equal length).