Geometry Glossary - D
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deductive reasoning:	Inferring from general principles to prove a statement.
diagonal:	A segment which joins two non-consecutive vertices.
diameter:	A chord that contains the center of a circle.
dilation:	A transformation which produces an image similar to the original.
disjunction:	The logical union "p or q," where p and q are statements

Note: The terms in this collection may not be entirely accurate.
They are for reference only.

deductive reasoning: