How to draw right angled triangle with python

Question

def drawTri(a):
    b = (a*math.tan(45))
    c = (a/math.cos(45))

    t.forward(a)
    t.left(135)
    t.forward(c)
    t.left(135)
    t.forward(b)

enter image description here

minimal working example please. `import` and `t` etc – buhtz Oct 03 '16 at 02:40 — buhtz, Oct 03 '16 at 02:40

score 0 · Accepted Answer · answered Oct 03 '16 at 02:39

0

import turtle

def drawTri(a):
    hyp = a * 2**0.5
    s = turtle.Screen()
    t = turtle.Turtle()
    t.forward(a)
    t.left(135)
    t.forward(hyp)
    t.left(135)
    t.forward(a)

answered Oct 03 '16 at 02:39

inspectorG4dget

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score 0 · Answer 2 · edited May 23 '17 at 10:27

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The problem here is close to that described in Basic trigonometry isn't working correctly in python

The turtle module uses degrees for angles, the math module uses radians

To calculate the cosine of 45 degrees you can use

math.cos(math.radians(45))

edited May 23 '17 at 10:27

Community

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answered Oct 05 '16 at 18:05

James K

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Alternatively, you can also switch the turtle to use radians via `turtle.radians()` and then calculate `math.cos(math.pi / 4)` – cdlane Oct 06 '16 at 22:28

cdlane · Answer 3 · 2017-05-30T04:27:35.790

0

Who needs angles?

def drawTri(a):
    x, y = turtle.position()
    turtle.setx(x + a)
    turtle.sety(y + a)
    turtle.goto(x, y)

edited May 30 '17 at 04:27

answered Oct 06 '16 at 22:20

cdlane

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Isn't the goto statement considered harmful :) – James K Oct 07 '16 at 19:53

score 0 · Answer 4 · answered Oct 21 '16 at 21:44

i made a relay simple way of making a right angle triangle i also added some other helpful things to know about python turtle that is you didn't already know them they should be helpful(i know you already have an answer but i just think that this is a much simpler way)

import turtle
t = turtle
f = t.forward
r = t.right
t.color('blue','yellow')
t.begin_fill()
f(70)
r(135)
f(100)
r(135)
f(70)
r(135)
t.end_fill()

t.penup()
t.setposition(-50,30)
t.pendown()
t.color('blue','yellow')
t.begin_fill()
f(70)
r(135)
f(100)
r(135)
f(70)
r(135)
t.end_fill()

there are two triangles there and its the extra stuff that makes it so bulky

How to draw right angled triangle with python

4 Answers4