Where does “ideaalikolmio” come from?

ideaalikolmio (Finnish) comes from Finnish ideaali, from Latin ideālis, from Latin idea, from Ancient Greek ἰδέα, from Ancient Greek εἴδω, from Proto-Indo-European weyd- — to see.

ideaalikolmio (Finnish): ideal triangle in hyperbolic geometry, a triangle whose vertices are all ideal

Definitions

ideal triangle in hyperbolic geometry, a triangle whose vertices are all ideal

Ancestry of “ideaalikolmio”, step by step

ideaalikolmio traces back through two separate lines of ancestry.

via Finnish ideaali

Step	Language	Word	Meaning
1	Finnish	ideaali	ideal
2	Latin	ideālis	ideal
3	Latin	idea	idea; prototype
4	Ancient Greek	ἰδέα	form, shape; look, appearance, semblance; type,...
5	Ancient Greek	εἴδω	to see; I see
6	Proto-Indo-European	weyd-	to see

via Finnish kolmio

Step	Language	Word	Meaning
1	Finnish	kolmio	triangle; three-room apartment; give way sign,...
2	Finnish	kolme	three
3	Finnish	kolmi	tri-
4	Proto-Uralic	*kolme	—

Every word from Proto-Indo-European weyd- →Every word from Ancient Greek εἴδω →Every word from Ancient Greek ἰδέα →