Page 81 - NUMINO Challenge_D1
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Type 9-1 Net of a Cut out Solid Figure
The following figure is a regular tetrahedron. The 1 point of each
3
edge, starting from each vertex, is cut out. Draw the net of the new
solid figure.
1 What is the shape of the faces of the solid figure made by cutting out the
vertices of a regular tetrahedron? What kind of shapes, and how many of
each, make up the net of this solid figure?
2 The following shows a portion of the cut-out edges and faces on the net
of a regular tetrahedron. Complete the net by drawing and coloring the
other cut-out parts.
3 The following net shows the regular hexagons that remain after cutting out
the vertices, and three newly made equilateral triangles. Draw one more
equilateral triangle to complete the net.
78 NUMINO Challenge D1
The following figure is a regular tetrahedron. The 1 point of each
3
edge, starting from each vertex, is cut out. Draw the net of the new
solid figure.
1 What is the shape of the faces of the solid figure made by cutting out the
vertices of a regular tetrahedron? What kind of shapes, and how many of
each, make up the net of this solid figure?
2 The following shows a portion of the cut-out edges and faces on the net
of a regular tetrahedron. Complete the net by drawing and coloring the
other cut-out parts.
3 The following net shows the regular hexagons that remain after cutting out
the vertices, and three newly made equilateral triangles. Draw one more
equilateral triangle to complete the net.
78 NUMINO Challenge D1
