What place or object in Washington D.C. looks like a conic section?
Even though I am not from your country, I recall from a visit years ago that there is a large park across from the White House called the "Ellipse".
To find a place or object in Washington D.C. that looks like a conic section, we first need to understand what a conic section is. A conic section is a curve that can be formed by taking the intersection of a cone with a plane. There are four types of conic sections: circle, ellipse, parabola, and hyperbola.
In Washington D.C., one prominent example of a conic section is the Reflecting Pool on the National Mall. When viewed from above, the Reflecting Pool resembles a long, narrow ellipse. It is a long rectangular body of water that stretches between the Lincoln Memorial and the Washington Monument, forming a symmetrical shape. The ellipse-shaped Reflecting Pool can be seen in various photographs and is a notable feature in the landscape of Washington D.C.
To verify this answer, you can search for images of the Reflecting Pool in Washington D.C. and observe its elliptical shape from an aerial or top-down perspective.