Term: concave polygon: a polygon such that there is a straight line that cuts it in four or more points
Broader: polygon: a closed plane figure bounded by straight sides | Unrelated: form family: (biology) an artificial taxonomic category for organisms of which the true relationships are obscure
Broader: polygon: a closed plane figure bounded by straight sides | Unrelated: id: a card or badge used to identify the bearer
Broader: polygon: a closed plane figure bounded by straight sides | Unrelated: old boy: a former male pupil of a school
Broader: polygon: a closed plane figure bounded by straight sides | Unrelated: spurious correlation: a correlation between two variables (e.g., between the number of electric motors in the home and grades at school) that does not result from any direct relation between them (buying electric motors will not raise grades) but from their relation to other variables
Broader: polygon: a closed plane figure bounded by straight sides | Unrelated: emperor: large moth of temperate forests of Eurasia having heavily scaled transparent wings
Broader: polygon: a closed plane figure bounded by straight sides | Unrelated: operational damage: loss of military equipment in field operations
Broader: polygon: a closed plane figure bounded by straight sides | Unrelated: tinsel: a thread with glittering metal foil attached
Broader: polygon: a closed plane figure bounded by straight sides | Unrelated: tool: an implement used in the practice of a vocation
Broader: polygon: a closed plane figure bounded by straight sides | Unrelated: distress: the seizure and holding of property as security for payment of a debt or satisfaction of a claim
Broader: polygon: a closed plane figure bounded by straight sides | Unrelated: ice milk: similar to ice cream but made of milk