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An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. In addition there are concave octahedra. Some of these will have no obtuse angles, others will have several.

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9y ago

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More answers

an obtuse angle has 2 angles.

Obtuse angle: _/-acute

/

right

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13y ago
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An obtuse angle is over 90 degrees but less than 180 degrees.

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9y ago
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An obtuse angle is any angle greater than 90 degrees.

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14y ago
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None. An acute angle is smaller than an obtuse angle.

*does, not dose, btw. =)

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13y ago
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None. The angles of an octahedron are solid angles and the term "obtuse" does not apply to solid angles.

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9y ago
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An octahedron have 6 obtuse angles.

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8y ago
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Q: How many angles does an obtuse angle have?
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