from tkinter import *
from tkinter import messagebox
root = Tk()
root.geometry("400x250")
root.resizable(0, 0)
root.config(bg="#103030")
root.title("Verificar se é Triângulo")
titulo = Label(text="Verificar se é Triângulo",
font=("Arial", "23", "bold"), bg="#103030", fg="#49e3e3")
titulo.place(relx=0.05, rely=0.05)
texto_sub1 = Label(text="Lado 1 :",
font=("Arial", "15", "bold"), bg="#103030", fg="#49e3e3")
texto_sub1.place(relx=0.25, rely=0.25)
texto_sub2 = Label(text="Lado 2 :",
font=("Arial", "15", "bold"), bg="#103030", fg="#49e3e3")
texto_sub2.place(relx=0.25, rely=0.4)
texto_sub3 = Label(text="Lado 3 :",
font=("Arial", "15", "bold"), bg="#103030", fg="#49e3e3")
texto_sub3.place(relx=0.25, rely=0.55)
Lado1 = IntVar()
Lado1_entrada = Entry(textvariable=Lado1,
font=("Arial", "12", "bold"),
bg="white", fg="blue", justify='center')
Lado1_entrada.place(relx=0.53, rely=0.25, relwidth=0.3)
Lado2 = IntVar()
Lado2_entrada = Entry(textvariable=Lado2,
font=("Arial", "12", "bold"),
bg="white", fg="blue", justify='center')
Lado2_entrada.place(relx=0.53, rely=0.4, relwidth=0.3)
Lado3 = IntVar()
Lado3_entrada = Entry(textvariable=Lado3,
font=("Arial", "12", "bold"),
bg="white", fg="blue", justify='center')
Lado3_entrada.place(relx=0.53, rely=0.55, relwidth=0.3)
def limpar():
Lado3_entrada.delete(0,END)
Lado2_entrada.delete(0,END)
Lado1_entrada.delete(0,END)
def app():
l1 = Lado1.get()
l2 = Lado2.get()
l3 = Lado3.get()
if (l1 + l2 < l3) or (l1 + l3 < l2) or (l2 + l3 < l1):
messagebox.showinfo(title="Classificação ", message="Não é um triângulo!")
else:
messagebox.showinfo(title="Classificação ", message="É um Triângulo!")
but1 = Button(text="Verificar", bd=2, bg='#107db2', fg='white',
font=('verdana', 12, 'bold'), command=app)
but1.place(relx=0.1, rely=0.8, relwidth=0.25, relheight=0.1)
but_limpar = Button(text="Limpar", bd=2, bg='#107db2', fg='white',
font=('verdana', 12, 'bold'), command=limpar)
but_limpar.place(relx=0.4, rely=0.8, relwidth=0.25, relheight=0.1)
but_sair = Button(text="Sair", bd=2, bg='#107db2', fg='white',
font=('verdana', 12, 'bold'), command=root.destroy)
but_sair.place(relx=0.7, rely=0.8, relwidth=0.25, relheight=0.1)
root.mainloop()
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