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14 Cards in this Set
- Front
- Back
the sum of the interior angles of a triangle is
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180'
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the acute angles of a right triangle are
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complementary
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each angles of an equilateral triangle is ...
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60'
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if 2 angles of one triangle are equal to 2 angles of another triangle, than the third angles are
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congruent
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in a triangle there can be at most one _______ angle and one ______ angle.
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right, obtuse
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polygons are formed by ______ sides
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coplanar
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eleven sided polygon
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hendecagon
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twelve?
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dodecagon
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twenty?
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isosagon
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n...?
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n-gon
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diagonal
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segment hat joins non-consecutive vertices (like a star within a pentagon)
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the sum of interior angles formula
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(n-2)180
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sum of exterior angles is always
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360
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regular polygon is both ____ and ___.
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equilateral
equiangular |