অঙ্কনের ইন্টুইশান: রেখার ওপর ও সাপেক্ষে বিন্দুর অভিক্ষেপ ও প্রতিফলন

Here, we learned how to construct a line through a point $P$ perpendicular to a line $\ell$. Intuitively, we know that if $P'$ is the reflection of a point $P$ across a line $\ell$, then $PP'\perp\ell$, just by symmetry. Therefore, construct a line perpendicular to $\ell$ through $P$, and let that line intersect $\ell$ at $Q$. Note: $Q$ is called the "projection of $P$ onto $\ell$," or the "foot of the perpendicular from $P$ to $\ell$." Finally, draw a circle centered at $Q$ through $P$ with your compass, and this circle intersects line $\ell$ again at $P'$.

Is it intuitive?