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Media > TDT > Reasoning > R_A_AP_AP1_fig1

Default object view. Click to create a custom template, Node ID: 13297, Object ID: 20980

R_A_AP_AP1_fig1

R_A_AP_AP1_fig1

Billiard balls.
Source: James Barker/Freedigitalphotos.net

Triangular array of billiard balls, five on each side and 15 in total.