एक मानक सममित तारा आकृति (जैसे दो परस्पर अतिव्यापी समबाहु त्रिभुजों द्वारा निर्मित 6-नुकीला तारा) में कितने त्रिभुज होते हैं?

How many triangles are there in a standard star pattern formed by two overlapping equilateral triangles pointing in opposite directions?

In a grid of size 4 × 4 squares, what is the total number of squares of all sizes contained within it?