How do I replace glBegin() and related functions in OpenGL ES 2.0?

I have OpenGL code like the following that I'd like to port to OpenGL ES 2.0:

for (surfnum=0;surfnum < surftotal;surfnum++){
    for (i=0;i<triNum[surfnum];i++){
        glBegin(GL_POLYGON);
        glNormal3fv(triArray[surfnum][i].normpt1);
        glVertex3fv(triArray[surfnum][i].pt1);
        glNormal3fv(triArray[surfnum][i].normpt2);
        glVertex3fv(triArray[surfnum][i].pt2);
        glNormal3fv(triArray[surfnum][i].normpt3);
        glVertex3fv(triArray[surfnum][i].pt3);
        glEnd();
        glFlush();
    }       
}

OpenGL ES 2.0 lacks GL_POLYGON, glNormal3fv, glVertex3fv, glEnd, glBegin, etc., so how do I replace these functions?

P.S.: I am doing this in Ubuntu 10.10 through an emulator.