The figure is a <u>solid</u> because it is three-dimensional and not flat.
The figure is a <u>polyhedron</u> because it is a three-dimensional shape with many sides.
The figure is a <u>pyramid</u> because it is three-dimensional and has four sides that meet in a point.
<em>It can't be a </em><u><em>prism</em></u><em> because the two ends are not equal. Both </em><u><em>polygon</em></u><em> and </em><u><em>triangle</em></u><em> are wrong because those are plane (flat) figures and this is a three-dimensional solid.</em>
