Question

1. how many triangles are shown, including any overlapping triangles?

Explanation:

Step1: Count small non - overlapping triangles

We have $\triangle ABX$, $\triangle XDE$, $\triangle AXE$, $\triangle BXE$, $\triangle DXE$.

Step2: Count large non - overlapping triangles

We have $\triangle ACE$, $\triangle BDE$.

Step3: Sum up the number of triangles

$5 + 2=7$.

Answer:

7