Programa calcula que tipo de triangulo es segun sus lados

Public Class Form27

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        Dim LA As Single

        Dim LB As Single

        Dim LC As Single

        LA = TextBox1.Text

        LB = TextBox2.Text

        LC = TextBox3.Text

        If ((LA + LB) < LC And (LB + LC) < LA And (LA + LC) < LB) Then

            Label4.Text = "NO ES UN TRIANGULO"

        Else

            If (LA = LB And LA = LC And LB = LC) Then

                Label4.Text = "ES UN TRIANGULO"

                Label5.Text = "EQUILATERO"

            Else

                If ((LA <> LB) And (LA <> LB) And (LB <> LC)) Then

                    Label4.Text = "ES UN TRIANGULO"

                    Label5.Text = "ESCALENO"

                Else

                    If (LA = LB Or LB = LC Or LA = LC) Then

                        Label4.Text = "ES UN TRIANGULO"

                        Label5.Text = "ISOCELES"

                    Else

                        Label4.Text = "NOSE"

                    End If

                End If

            End If

        End If

    End Sub

End Class