Clothing and Geometry

Sketches may use circles or triangles. Some may use rectangles. For example, a designer may sketch a boy's jacket. He may use two rectangles to stand in for the sleeves and one for the main body of the jacket. There may be a hood shaped like a triangle. The designer can also use geometry in the design of the jacket. Maybe it will have square pockets on the front. A designer sketching a shirt must decide what size angle to use for the collar opening. Designers also use angles. Suppose a designer...

Symmetry Congruence and Beauty

Symmetry Fashion

Look at the sketch on this page for a woman's shirt. The front of the shirt has buttons going down the middle. On the left side of the buttons, there is a half-circle. You see the same half-circle on the right side of the buttons, except that it has been flipped over. The circle shape on the shirt has line symmetry. That means that one-half of the shape is the mirror image of the other half. Fashion designers often create clothes that have line symmetry. That's because many people think that...

You Do the Math

Measuring Her Feet With Ruler

A designer is making a prototype of a wedding gown. She estimates she will need 80 square feet of fabric. Remember that 1 yard of fabric has 12 square feet. How many yards of fabric should she buy to be sure she has enough This woman is using a measuring tape to measure the collar on a shirt. A designer is ready to make her prototype. So she takes out her measuring tape. A measuring tape is used to measure length. It is a type of ruler. Most rulers are stiff, but a measuring tape is flexible....

Fashion Show Glossary

Congruent figures Figures that have the exact same shape and size. fabric The cloth from which clothes are made. fashion designers People who design and create clothing. fashion show A show where new clothing designs are displayed. hem The bottom of a skirt, dress, pair of pants, or other clothing item. The hem is usually given a smooth finish by folding under the edge of the fabric and sewing it down. line symmetry What a figure has if its two halves are mirror images of each other, so that...

Making the Prototype

Fashion Designer Prototype

A fashion designer works on a prototype of a dress design. A fashion designer works on a prototype of a dress design. rou know that designers think of an idea, make a sketch, and choose their fabric. Next, they make a prototype. A prototype is a sample of a design. It looks like the sketch, but it is made of fabric. This helps the designer see what the piece of clothing might really look like when it is completed. The designer may use the prototype to work on his design some more.

Using Congruent Shapes

Designers also use congruent figures in some of their designs. Congruent figures have the exact same shape and size. A circle and a square are not congruent. They do not have the same shape. A large square and a small square are not congruent. They do not have the same size. If two figures are congruent, when you place one over the other, the first one exactly covers the second. Congruent figures can make clothing interesting. Look at the skirt shown above. It has small triangles on it. The...

Table of Contents

They Make It, You Wear Coming Up with Sketching the Symmetry, Congruence, and Beauty 10 Choosing the Making the Measure, Measure, Making It Perfect with The Fashion Food and Drinks for the Show 22 Making the The All-Important If You Want to Be a Fashion Designer 28 Answer To Learn Answers and helpful hints for the You Do the Math activities are in the Answer Key. Words that are defined in the Glossary are in bold type the first time they appear in the text.

Flip Tessellation

How You Tessellation Patterns

All of the figures fit together like a puzzle. There are no gaps between the figures. The figures do not overlap. Many mosaics are examples of tessellations because they are made up of tiles that are all the same size and all the same shape. There are different ways to make a tessellation. One way is called a slide. Study the tessellation on page 12. It is made from one figure that has four sides. Each figure in the farthest left row has been slid down and to...

Materials and Multiplication

But how much of each kind of fabric should she buy How much thread How many buttons The designer uses multiplication to find out. Here's how she does it. She knows that she needs 4 yards of denim for each jacket, and she knows that she needs to make 100 jackets So the designer needs 400 yards of denim. She needs 3 yard of nylon for the lining of each jacket So the designer needs 300 yards of nylon. She needs 1 spool of thread to sew each jacket So the designer needs 100 spools of thread. Each...

Making It Perfect with Fractions

A designer measures the length of a skirt. A designer measures the length of a skirt. When you see a beautiful dress or a cool shirt, do you think of fractions Probably not. But fractions and clothing go hand in hand. Fashion designers use fractions when they make clothes. Designers often have to add or subtract fractions. Sometimes a prototype looks too long after it is made. So the designer must cut off some fabric. How much fabric It depends on the measurement. Measurements often include...

Sewing and Selling

They use addition and subtraction to find out if they will make a profit on the clothes they make. The profit on a piece of clothing is the amount of money earned from selling it less all the costs of making it. For example, let's say a designer makes a dress. She buys the fabric for 50.00. The zipper costs her 5.00. She buys the thread for 3.00. She pays someone who works for her 30.00 to sew the dress. The designer uses addition to find out how much it...

How Fashion Designers Use Math

Stewart, M.A., Specialist in Mathematics, Science, and Technology Education Math in the Real World How Fashion Designers Use Math Copyright 2010 by Infobase Publishing All rights reserved. No part of this book may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage or retrieval systems, without permission in writing from the publisher. For information contact An...