Question

Determine if a triangle with angle measures of 50, 40, and 90 forms a unique triangle, more than one triangle, or no triangle

Answer 1

We are given the angles 50, 40, and 90. To determine if these angles form a triangle we need to add them all together and if the answer is 180, then they do form a triangle:

$50+40+90=90+90=180$

Therefore, these angles form a triangle. This triangle is not unique since all the triangles with these angles form a set of similar triangles.