Math and Arithmetic

Negation is the opposite of something actual or positive. The negation of a true statement will be false. The negation of a false statement will be true.

Washington Irving .
Washington Irving wrote the Legend of Sleepy Hollow.

Knit a sample first. Cast on and knit with twenty stitches to start, and knit until it's a few inches long. Measure your knitting. Let's say it's four inches wide. Divide twenty stitches by four inches, and that means that for every five stitches you knit, you've got one inch. Multiply that by eight and cast on. Knit until it's eight inches long. You could do the same for centimeters, just measure and calculate in cm.

We know that diagonals of parallelogram bisect each other.

Therefore, O is the mid-point of AC and BD.

BO is the median in ΔABC. Therefore, it will divide it into two triangles of equal areas.

Area (ΔAOB) = Area (ΔBOC) ... (1)

In ΔBCD, CO is the median.

Area (ΔBOC) = Area (ΔCOD) ... (2)

Similarly, Area (ΔCOD) = Area (ΔAOD) ... (3)

From equations (1), (2), and (3), we obtain

Area (ΔAOB) = Area (ΔBOC) = Area (ΔCOD) = Area (ΔAOD)

Therefore, it is evident that the diagonals of a parallelogram divide it into four triangles of equal area.

Area = 16.2 sq metres.

If the perimeter is 84 feet and the length is twice the width, then the length will be 28 feet and the width will be 14 feet.

Two triangles

by multipling

The picture is 4000 cm2

false

Assume a statement true and then show it must be false

There is only one equilateral triangle with a perimeter of 60 units. Its side lengths are integers.

5 < x < 9

False because although the angles are the same the sides are proportional by ratio to each other.

You can get paving stones at Home Depot or most other home stores. They're often used to make a walkway or to decorate a small area in a garden between plants. You can also use them around a patio.

Why should the fine adjustment knob be used only with the HPO

The triangles are similar by the Side-Side-Side Similarity Theorem.