Board Tiling, Chocolate Breaking with a Hint of Fibonacci. Part I By Harry Main-Luu
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1 Board Tiling, Chocolate Breaking with a Hint of Fibonacci Part I By Harry Main-Luu
2 General Overview Part 1: Tiling a Plane Part 2: Tiling a Board Part 3: Breaking and Sharing Chocolate
3 Some overarching questions for today s sessions: 1. Which types of patterns work to tile a plane (or a floor in your bedroom?) 2. Which special shapes can tile a plane and WHY? Some materials are adapted from U. Waterloo, Canada
4 Tiling a Plane: Warm-Ups Choose the odd one out! Graphics from open sources
5 Tiling a Plane: What is it? Definition: A tessellation of a the plane is a way to cover the entire plane using finitely many types of geometric figures, where there are no overlapping or gaps. Examples: A, B, C (earlier). Non-example: D
6 Tiling a Plane: Tessellations Examples or non-examples?
7 For each of the examples, answer the following questions: a. How many different shapes (ignore the colors - they are misleading!) are used to tile the plane? You can think of these as buying white tiles and then paint them however you like. b. Describe the process of tiling using the tiles required!
8 For each of the examples, answer the following questions: a. How many different shapes (ignore the colors - they are misleading!) are used to tile the plane? You can think of these as buying white tiles and then paint them however you like. b. Describe the process of tiling using the tiles required!
9 For each of the examples, answer the following questions: a. How many different shapes (ignore the colors - they are misleading!) are used to tile the plane? You can think of these as buying white tiles and then paint them however you like. b. Describe the process of tiling using the tiles required!
10 For each of the examples, answer the following questions: a. How many different shapes (ignore the colors - they are misleading!) are used to tile the plane? You can think of these as buying white tiles and then paint them however you like. b. Describe the process of tiling using the tiles required!
11 For each of the examples, answer the following questions: a. How many different shapes (ignore the colors - they are misleading!) are used to tile the plane? You can think of these as buying white tiles and then paint them however you like. b. Describe the process of tiling using the tiles required!
12 For each of the examples, answer the following questions: a. How many different shapes (ignore the colors - they are misleading!) are used to tile the plane? You can think of these as buying white tiles and then paint them however you like. b. Describe the process of tiling using the tiles required!
13 Try to make your own shape that will tile the plane, using up to three different tiles! You can of course use any shape. But some strategies might help: Use polygons (shapes with straight sides rather than curved) Use symmetries (translation, rotation, reflection work best)
14 Escher Tessellations So here is one cool way to make tessellations, due to a Dutch artist M.C Escher. This technique has appeared on tapestries, wallpapers, floor tiles...
15 That looks very difficult! So we will learn the basic principles and you can explore at home!
16 That looks very difficult! So we will learn the basic principles and you can explore at home!
17 That looks very difficult! So we will learn the basic principles and you can explore at home!
18 What does it look like when you put them together? I ll draw on the board! :) You should play with this idea at home with colored grid paper!
19 Which special shapes can tile a plane and WHY? We will focus on regular polygons! What is a regular polygon?
20 Which special shapes can tile a plane and WHY? Which regular polygons can tile the plane by itself? Explore and practice!
21 Sum of all interior angles of a regular n-gon? Number of Angles n Total Degrees 180 Measurement of Each Angle 60
22 Which regular polygons can tile the plane by itself? Number of Angles 3 Measurement of Each Angle 60 Can Tile YES n --
23 What about combinations of regular polygons? 1. We want to remodel 1015 Evans and retile the floor using a combination of two types of regular polygons from selection of 3-gon, 4-gon, 6-gon or 8-gon. Which combinations are possible? 2. What if we want to use three different types?
24 See you next week on Tiling a Board! Board Tiling, Chocolate Breaking with a Hint of Fibonacci Part I By Harry Main-Luu
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