There are 12 acute angles in total.
Calculation:
Each side you can see a triangle(3 acute angles), totally 4 triangles... so 4*3 = 12
you can leave out the base as it is a square...
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No angles are larger than 90 degrees in a square based pyramid.
20 angles
Yes - it has four around the base !
angels are a fictional creature. you mean angles.
A triangle-based pyramid has one right angle at the apex where the three triangular faces meet. This right angle is formed by the intersection of the base of the pyramid and one of its slant edges. The other angles in a triangle-based pyramid are typically acute angles formed by the base and the slant edges.