Question

1. Afigure has line symmetry, if there is a line about which the figure may be folded so
that the two parts of the figure will coincide.
2. Regular polygons have equal sides and equal angles. They have multiple (le, more
than one) lines of symmetry,
3. Each regular polygon has as many lines of symmetry as it has sides.
Regular
Regular Regular Square Equilateral
Polygon
hexagon pentagon
triangle
Number of lines
5
4
of symmetry
4. Minor reflection leads to symmetry, under which the left-right orientation have to be
taken care of
5. Rotation turns an object about a fixed point.
This fixed point is the centre of rotation.
The angle by which the object rotates is the angle of rotation.
A half-turn means rotation by 180; a quarter-turn means rotation by 90' Rotation
may be clockwise or anticlockwise.
6. If, after a rotation, an object looks exactly the same, we say that it has a rotational
symmetry.
7. In a complete tum (of 360°), the number of times an object looks exactly the same is
called the order of rotational symmetry. The order of symmetry of a square, for
example, is 4 while, for an equilateral triangle, it is 3.
8. Some shapes have only one line of symmetry, like the letter E, some have only rotational
symmetry, like the letter S; and some have both symmetries like the letter H.
The study of symmetry is important because of its frequent use in day-to-day life and
more because of the beautiful designs it can provide us.​

Answer 1

Answer:

here it is

Step-by-step explanation:

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Answer 2

Answer:

photosynthesis is the process im which sun produces heat ans light to the plants and trees to produce carbon dioxide and exhale oxygen these

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