Leaf:
open
Distance from wall to wall across the table:
150 cm
Fold it
Open it
Table depth
70 cm
Floor left to the far wall
80 cm
Floor you win back
0 cm
Top-down view. Solid table: an example 110 cm wide drop-leaf, 20 cm deep folded and 70 cm deep open. The dashed outline is a fixed table of the same open size. Real tables vary, so use your own numbers.