Question

Answers this guys please ​

Answer 1

Answer:

a) no lines of symmetry

b) perimeter

c) 6a

d) units

e) π

Step-by-step explanation:

a) Parallelograms have no lines of symmetry. But they do have rotational symmetry at 180°, about the center (intersection of diagonals).

b) Perimeter is the distance around a two dimensional shape, a measurement of the distance around something; the length of the boundary.

c) Perimeter =6a

d) Ratios are used to compare quantities. Ratios help us to compare quantities and determine the relation between them. A ratio is a comparison of two similar quantities obtained by dividing one quantity by the other. ... Hence to compare two quantities, the units must be the same.

e) Whether a circle's radius is 1 cm or 1 km, the ratio of its circumference to its diameter will be π in either case. The fact that this ratio is constant (that is, π is constant for every circle) can be proved, though the proof requires somewhat more advanced Mathematics.

HOPE IT IS HELPFUL !!!

Answer 2

Answer:

a. Number of lines of symmetry in a parallelogram is 4.

b. Length of boundary is known as perimeter.

c. Perimeter of a regular heptagon is 7s.

d. While comparing two quantities, their unit should be the same.

e. Ratio of circumference of the circle to it's diameter is $\frac{1}{\pi }$