private void button7_Click(object sender, EventArgs e)
        {
            Operasi pkt = new Operasi();

            pkt.x = Convert.ToDouble(txt_satu.Text);
            pkt.y = Convert.ToDouble(txt_dua.Text);
            pkt.z = Convert.ToDouble(txt_tiga.Text);

            txt_hasil.Text = Convert.ToString(pkt.pkt());
        }
        private void button2_Click(object sender, EventArgs e)
        {
            Operasi kbk = new Operasi();

            kbk.x = Convert.ToDouble(txt_satu.Text);
            kbk.y = Convert.ToDouble(txt_dua.Text);
            kbk.z = Convert.ToDouble(txt_tiga.Text);

            txt_hasil.Text = Convert.ToString(kbk.kbk());
        }
        private void button6_Click(object sender, EventArgs e)
        {
            Operasi mdls = new Operasi();

            mdls.x = Convert.ToDouble(txt_satu.Text);
            mdls.y = Convert.ToDouble(txt_dua.Text);
            mdls.z = Convert.ToDouble(txt_tiga.Text);

            txt_hasil.Text = Convert.ToString(mdls.modulus());
        }
        private void button5_Click(object sender, EventArgs e)
        {
            Operasi bg = new Operasi();

            bg.x = Convert.ToDouble(txt_satu.Text);
            bg.y = Convert.ToDouble(txt_dua.Text);
            bg.z = Convert.ToDouble(txt_tiga.Text);

            txt_hasil.Text = Convert.ToString(bg.bagi());
        }
        private void button4_Click(object sender, EventArgs e)
        {
            Operasi kali = new Operasi();

            kali.x = Convert.ToDouble(txt_satu.Text);
            kali.y = Convert.ToDouble(txt_dua.Text);
            kali.z = Convert.ToDouble(txt_tiga.Text);

            txt_hasil.Text = Convert.ToString(kali.kali());
        }
        private void button3_Click(object sender, EventArgs e)
        {
            Operasi krg = new Operasi();

            krg.x = Convert.ToDouble(txt_satu.Text);
            krg.y = Convert.ToDouble(txt_dua.Text);
            krg.z = Convert.ToDouble(txt_tiga.Text);

            txt_hasil.Text = Convert.ToString(krg.kurang());
        }
        private void button1_Click(object sender, EventArgs e)
        {
            Operasi tmbh = new Operasi();

            tmbh.x = Convert.ToDouble(txt_satu.Text);
            tmbh.y = Convert.ToDouble(txt_dua.Text);
            tmbh.z = Convert.ToDouble(txt_tiga.Text);

            txt_hasil.Text = Convert.ToString(tmbh.tambah());
        }