geometry
posted by properties of triangle .
the exterior angle and one interior opposite angle of each triangle are given.find the other interior opposite angle and the third angle of each triangle.given120degre,45degree

I do not understand your post.
Exterior angle? Where? Which one?
"find the other interior opposite angle"
Other? Interior? Opposite what?
"and the third angle of each triangle"
How many angles do you expect someone to find?
Please reread your post. Think of it like thisIf you knew absolutely nothing about this problem, could you solve this problem the way your post is worded?
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