A convex polyhedron has 20 faces that are congruent equilateral triangles. What is the name of the solid?
O triangular prism
O triangular pyramid
O octahedron
icosahedron

When you dilate a figure with a scale factor of 1/2, what will the dilated figure look like?                                                                                           a: the dilated figure will have side lengths that are half the length of the original side lengths.                                                                          b: the angles in the dilated figure will be half the measure of the original figure.                                                                                c: the dilated figure will have side lengths twice the length of the original.