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.
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Well, honey, a triangle-based pyramid has only one right angle. The other three angles are not right angles, they are just regular ol' angles minding their own business. So, if you're looking for right angles, you better keep searching because this pyramid ain't the place to find 'em.
If a triangular based pyramid has any right angles it has three. (Think of the corner of a cube). There are many triangular based pyramids that do not have any right angles.
No angles are larger than 90 degrees in a square based pyramid.
Yes - it has four around the base !
A triangle can never have three right angles
In a right angled triangle the two other angles are acute.
In a right angled triangle the two other angles are acute.