Course Content
Lines and Polygons

In this lesson we'll see how to draw lines and polygons.

Line

Let's look at how to draw a line.

z = line()
show(z)

The above example draws a horizontal line connecting points (-100, 0) and (100, 0).

We can also specify the coordinates of both the start and end points.

z = line(x1=0, y1=0, x2=100, y2=100)
show(z)

The above example, draws a line from point (0, 0) to point (100, 100)

If we want to draw a triangle, we can do that by drawing three lines.

x1, y1 = 0, 0
x2, y2 = 100, 0
x3, y3 = 0, 100

z1 = line(x1, y1, x2, y2)
z2 = line(x2, y2, x3, y3)
z3 = line(x3, y3, x1, y1)
show(z1, z2, z3)

Exercise 2.14: Diagonals

Write a program to draw the diagonals of a square using the line function.


Exercise 2.15: Hash

Write a program to draw the following shape using lines.


Polygon

As you could have seen in the previous example, it is get cumbersome to draw polygons using just lines. The polygon function is a better way to create polygons.

The polygon function takes a list of points as argument and returns a polygon shape.

p1 = point(x=0, y=0)
p2 = point(x=100, y=0)
p3 = point(x=0, y=100)

shape = polygon([p1, p2, p3])
show(shape)

Exercise 2.16: Triangle

Write a program to draw the following shape using the polygon function.


Exercise 2.17: Diamond

Write a program to draw the following shape using the polygon function.


Exercise 2.18: Another Polygon

Write a program to draw the following shape as a single polygon.

Hint: You just need to specify the two corners in the correct order.


Questions
Lovebin Robin
6 months ago
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how to draw semicirlce

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Fathimathu Surayya
1 year ago
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How to solve 2.14?

AA Arjun Anil
1 year ago
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s1 = rectangle(h=200,w=200) x1,y1 = -100,100 x2,y2 = 100,-100 x3,y3 = 100,100 x4,y4 = -100,-100 z1 = line(x1,y1,x2,y2) z2 = line(x3,y3,x4,y4) show(s1,z1,z2)

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FJ Fathimathul Jumana
1 year ago
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how to solve 2.15?

FJ Fathimathul Jumana
1 year ago
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how to solve 2.15

Ambika Joshi
1 year ago
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you can give the x and y variables negative values ```# your code here x1, y1 = -100, 50 x2, y2 = 100, 50 x3, y3 = -50, 100 x4, y4 = -50, -100

l1 = line(x1, y1, x2, y2) l2 = line(x1, -y1, x2, -y2) l3 = line(x3, y3, x4, y4) l4 = line(-x3, y3, -x4, y4)

draw the diagonals

show(l1,l2,l3,l4)```

MJ Meenakshi Jayakumar
1 year ago
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l1=line(x1=-50,y1=100,x2=-50,y2=-100) l2=line(x1=50,y1=100,x2=50,y2=-100) l3=line(x1=-100,y1=50,x2=100,y2=50) l4=line(x1=-100,y1=-50,x2=100,y2=-50) show(l1,l2,l3,l4)

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how to solve 2.14
BD Belwin david
1 year ago
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how to solve question number 2.14

NA Neha Arun
1 year ago
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r1=rectangle(w=200,h=200) z1=line(x1=-100,y1=-100,x2=100,y2=100) z2=line(x1=-100,y1=100,x2=100,y2=-100) show(r1,z1,z2)

RT Razan Thaha
1 year ago
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how to code a hash?

MafiaNUB
1 year ago
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how to solve question number 2.17

BS Bincy Sibichen
1 year ago
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p1=point(x=-100,y=0) p2=point (x=100,y=0) p3=point(x=0,y=100) p4=point(x=0,y=-100) shape=polygon ([p1,p3,p2,p4]) show(shape)

AJ Aqulin Jebha S
1 year ago
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How to solve 2.18

PK Parthive kg
1 year ago
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how to solve 2.15 ?

MJ Meenakshi Jayakumar
1 year ago
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here is the square

s = rectangle(w=200, h=200) show(s)

draw the diagonals

d1=line(x1=100,y1=-100,x2=-100,y2=100) d2=line(x1=100,y1=100,x2=-100,y2=-100) show(d1,d2)

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BS Bhagavath S
1 year ago
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How to slove 2.15 hash

Elizabeth Rachel Yohannan
1 year ago
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p1 = point(x=0, y=0) p2 = point(x=100, y=0) p3 = point(x=0, y=100)

shape = polygon([p1, p2, p3]) show(shape)

AN Ameena Nazar
1 year ago
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How to solve 2.17, diamond ?

DP Devjith P
1 year ago
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p1=point(x=-100,y=0) p2=point(x=0,y=-100) p3=point(x=100,y=0) p4=point(x=0,y=100)

fig=polygon([p1,p2,p3,p4]) show(fig)

Anand Chitipothu
1 year ago
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Bhagavath, for 2.15, you need to draw 4 lines. Identify x1,y1 and x2,y2 for each of the 4 lines and draw it.

Anand Chitipothu
1 year ago
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Ameena, for 2.17, you need to draw a polygon with 4 points. If you identify all the four points when you'll be able to draw it.

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Goutham Krishna J
1 year ago
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How to solve 2.18

VV Vishnu V
1 year ago
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p1 = point(x=-100, y=100) p2 = point(x=100, y=100) p3 = point(x=-100, y=-100) p4 = point(x=100, y=-100)

shape = polygon([p1, p2, p3, p4]) show(shape)

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