Practice problem
How many unique triangles ABCABCABC are there with these properties? ∠A=30∘\angle A=30^{\circ}∠A=30∘ ∠B=60∘\angle B=60^{\circ}∠B=60∘ ∠C=90∘\angle C=90^{\circ}∠C=90∘
000
111
Infinitely many.
Type a concept, like “slope” or “photosynthesis”.