Southeast
noun, の adjective
The South East is the Southeast.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
車は、南東の方に行った。
The car went in a southeast direction.
会社のビルは南東を向いています。
The office building is facing southeast.
南東は、よく日が当たります。
The southeast gets good sun light.