How do I solve this I’m a little confused

y do u put "subscirbe to ence" on a app for ppl who need with their work?

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation:

ion

step-by-step explanation:

ion ion ion ion ion ion ion ion ion ion ion