Problem in drawing a triangle with sides 3, 4, 5 in c++!?

Quote:

How I can adjust the character * to have a nice shape of triangles with exact size 3 , 4, and 5. Here, just seems the sides are 4, 4, and 5 whereas I want to show 3, 4 and 5. Is it possible?

void MyDraw1(HDC hdc, int start_x, int start_y, double size)
{
    using namespace Gdiplus;

    Graphics gfx(hdc);

    // construct polygon (triangle: 3,4,5)
    std::vector<Point> p;
    p.push_back(Point(0, 0));
    p.push_back(Point(0, 3));
    p.push_back(Point(4, 3));

    // resize with offset
    for (size_t i = 0; i < p.size(); i++) {
        p[i].X = (INT)round(p[i].X * size) + start_x;
        p[i].Y = (INT)round(p[i].Y * size) + start_y;
    }

    Color  mycolor(0, 0, 255);
    Pen    myPen(mycolor);
    gfx.DrawPolygon(&myPen, p.data(), p.size());
}