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Complementary Angles |
Two angles that add up to equal 90 degrees. |
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Supplementary Angles |
Two angles that add up to 180° |
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Convex Polygon |
A polygon that has all interior angles less than 180° |
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Scalene Triangles |
no equal sides
no equal angles |
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Isosceles Triangles |
2 equal sides
2 equal angles |
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Concaved Polygon |
A polygon that has one or more interior angles greater than 180° |
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Congruent Angles |
angles that are equal |
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Parallel Lines |
lines that never meet |
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Perpendicular Lines |
lines that meet to form right (90 degree) angles |
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Altitude of a Triangle |
The altitude of a triangle is the perpendicular from the base to the opposite vertex. |
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Median of a Triangle |
a line joining a vertex to the midpoint of the opposite side.
A triangle therefor has three medians. |
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Sphere |
sphere |
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Pyramid |
pyramid |
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Cone |
cone |
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Cylinder |
cylinder |
