noun, na-adjective, noun which may take the genitive case particle 'no'
right angle
Refers to a 90-degree angle. Used as a noun, adjectival noun (直角な), or pre-noun modifier (直角の). Common in geometry, construction, and everyday descriptions of perpendicularity.
この三角形には直角がある。
This triangle has a right angle.
壁と床は直角に交わっている。
The wall and the floor meet at a right angle.