If both pairs of opposite angles of a quadrilateral are congruent, then it is a parallelogram.
true
There are many different ways but a defining characteristic is that is has two pairs of parallel sides.
Yes, it is.
The area of a parallelogram is not enough information to determine its shape.
The area of a parallelogram does not provide enough information to determine its dimensions.
The area and perimeter of a parallelogram are not sufficient to determine its dimensions.
The lengths of the sides of a parallelogram is not enough information to determine its area.
x = 6.5y = 16.9
You can determine if a coin is not pure silver by calculating its density using the formula density = mass/volume. Compare this calculated density to the known density of pure silver (10.5 g/cm3). If the calculated density does not match the density of pure silver, then the coin is not pure silver.
Power in physics can be determined by calculating the amount of work done per unit of time. It is measured in watts (W) and can be calculated using the formula: Power Work / Time.
That the 4 sides are equal in length and that the 4 interior angles are of the same sizes