They should be close enough together that the child cannot get his/her head stuck in between them.
Not necessarily. A quadrilateral is a plane shape with four straight sides. There is no requirement for a side to be parallel to another.
If the squares can be placed on top of one another, they could form a shape with from 6 to 16 sides.If the squares can be placed on top of one another, they could form a shape with from 6 to 16 sides.If the squares can be placed on top of one another, they could form a shape with from 6 to 16 sides.If the squares can be placed on top of one another, they could form a shape with from 6 to 16 sides.
A polygon with four or more sides can meet these requirement.
2 markers are placed on opposite sides of the runway
74 square inches
A quadrilateral with opposite sides parallel & having unequal diagonals.The distance of diagonals/sides is calculated by the distance formula.
As long or as short as you like. The only requirement is that the sum of any two sides must be greater than the third.
With great difficulty. Or to put it another way, you also need to know the distance between the two parallel sides and the offset of the two parallel sides.
It is called Perimeter. For example if you have a square with 10 on all 4 sides, the distance or perimeter of the sides is 40
Parallel sides are lines that remain the same distance apart.
This is a parallelogram. The first requirement is 2 pairs of congruent sides where the congruent sides are not adjacent. This is like a rectangle (excluding a square) that has two pairs of congruent sides where the congruent sides are not adjacent. But the angles are not all congruent (as set in the question) which pushes the shape into the "next less regular" shape, the parallelogram. The angles will not all be congruent, but it will have 2 pairs of congruent angles. There is no way to avoid the 2 pairs of congruent angles because of the requirement that the shape must have 2 pairs of congruent sides (the first requirement).
Seven 9 inch squares placed end to end would form a rectangle that was still 9 inches wide but 7 x 9 = 63 inches long. The distance around such a rectangle would measure its perimeter. Two sides are 9 inches long and two sides are 63 inches long. The perimeter would be 63 + 63 + 9 + 9 = 144 inches.