A polygon is a shape that has any number of straight sides, such as a triangle, square or hexagon. The apothem refers to the length of the line the connects the center of a regular polygon to the midpoint of any of the sides. You can calculate the apothem if you know the area.
Set up the formula for finding the apothem of a regular polygon.
Plug the side length into the formula.
Plug the number of sides into the formula.
Complete the calculation in parentheses.
Find the tangent.

Likewise, how do you find the Apothem of a regular polygon?

Method 2 Using Trigonometry (Given Side Length or Radius)

What are the properties of an octagon?

Isogonal figureConvex polygonEquilateral polygonIsotoxal figureCyclic

Is an octagon regular or irregular?

So, the sum of the interior angles of an octagon is 1080 degrees. Regular Octagons: The properties of regular octagons: All sides are the same length (congruent) and all interior angles are the same size (congruent).

## How do you divide a hexagon into three equal parts?

Part 1 Dividing into Three Equal Parts
Mark the center of the hexagon. If the center is not marked, you can locate it using a straightedge.
Draw a line from the center point to a vertex. You can begin with any vertex.
Draw lines from the center point to the third and fifth vertices.
Identify the three equal parts.

## How do you divide a triangle into four equal parts?

We can divide a triangle into 4 parts of equal area in two steps. First cut the triangle into two equal parts through a median. Now further divide each of the two halves by cutting through their respective medians.

## What is the definition of pattern blocks?

Pattern Blocks are one of the mathematical manipulatives developed in the 1960s by Education Development Center as part of their Elementary Science Study project. They allow children to see how shapes can be decomposed into other shapes, and introduce children to ideas of tilings.

## What are the shapes of pattern blocks?

One set of pattern blocks has six colour-coded geometric solids. The top and bottom surfaces of these solids are geometric shapes: hexagon, trapezoid, square, triangle, parallelogram (2). Except for the trapezoid, the lengths of all sides of the shapes are the same.

## What is a block pattern?

In sewing and fashion design, a pattern is the template from which the parts of a garment are traced onto fabric before being cut out and assembled. Patterns are usually made of paper, and are sometimes made of sturdier materials like paperboard or cardboard if they need to be more robust to withstand repeated use.

## What is a drafted pattern?

Pattern drafting is the process of creating a pattern by taking measurements from a person, form, or model, in order to then create a foundation, which is a pattern used as the basis for the design.

## What is a bodice block?

A basic bodice block is a great starting point for most patterns involving your top half – it can be used to make tops and dresses, and paired with a sleeve block can be used to make shirts, blazers, jackets and coats. Many patterns evolve from this block.

## What is a bodice Sloper?

A sloper is a type of basic pattern that is used as the building block for all other patternmaking. Slopers are drafted based on specific body measurements and do not include a seam allowance, wearing ease, or any other design elements.

## What is the skirt Sloper?

A sloper (what we will be making) is a basic pattern without seam allowances or ease, which will be made DIRECTLY from your measurements. And “ease” is the additional room in a pattern that is made for comfort of clothing (less ease—the tighter the clothing, more ease–the looser the clothing).

## What is the meaning of pattern grading?

Pattern grading is the process of turning base size or sample size patterns into additional sizes using a size specification sheet or grading increments. This can be done manually or digitally using computerized pattern cutting software. These increments are referred to as garment grading rules.

## What is a flat pattern?

It is the art of manipulating and shaping a flat piece of fabric to conform to one or more curves of the human figure . Pattern making is a bridge function between design and production. A sketch can be turned into a garment via a pattern which interprets the design in the form of the garment components (Cooklin).

## What is the pattern allowances?

Pattern Allowances: A pattern is always made larger than the required size of the casting considering the various allowances. These are the allowances which are usually provided in a pattern. 1: shrinkage or contraction allowance: The various metals used for casting contract after solidification in the mould.

## What is the grain line?

On woven fabrics, the grain line is the warp (the longwise threads which are stretched on the loom), i.e. the longwise direction a fabric. The weft are the threads woven across the warp. On Burda sewing pattern pieces the word grain line (“Fadenlauf” in German) is printed on a suitable straight line or edge.

## Is the grain line parallel to the selvage?

It will be cut along the crosswise grain. The line of fabric that moves at a right angle to the crosswise grain is the lengthwise grainline. This thread runs the entire length of the fabric and is parallel to the selvage.

## Do you cut fabric selvage to selvage?

The grainline that you will see most often when cutting out your pattern is the one that runs parallel to the selvage. To find this lengthwise grain of your fabric, line up the selvages with right sides together. The raw edges cut from the fabric store will most likely not line up as they did before washing.

## What is the selvage edge of fabric?

A selvage is the tightly woven edge of a fabric. It prevents the side edges of the fabric from raveling or fraying. Don’t use the selvage in your project! The selvage, because it’s densely woven, is sturdier than the rest of the fabric, so it can be more difficult to sew through.

## How do you measure fabric?

The fabric measurements basics. This means that when you buy a yard of fabric you’re getting 1 yard x the width of the fabric (usually measured in inches). The most common widths of fabrics are 36″, 45″, 54″, 60″, 72″, and 118″.

## What makes an octagon?

All sides are the same length (congruent) and all interior angles are the same size (congruent). To find the measure of the angles, we know that the sum of all the angles is 1080 degrees (from above) And there are eight angles So, the measure of the interior angle of a regular octagon is 135 degrees.

## What type of shape is an octagon?

An octagon is a geometrical shape that contains eight sides and eight angles. Octagons must have straight sides that connect; they cannot be curved or disconnected. You will often see octagons in real life in the shape of a stop sign.

## How many sides are there in a octagon?

8 sides