private void btnExit_Click(object sender, EventArgs e)
{
GeometricCalculator f1 = new GeometricCalculator();
f1.Show();
this.Close();
}
private void timer1_Tick(object sender, EventArgs e)
{
i++;
if (i == 1)
{
GeometricCalculator form = new GeometricCalculator();
form.Show();
Visible = false;
}
}