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14 Cards in this Set
- Front
- Back
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Triangle inequality conjecture |
The sum of the lengths of any two sides of a triangle is greater than the length of the third side |
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Triangle angle sum |
The sum of the measures of the three angles of a triangle is 180 |
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Right triangle sum theorem |
The acute angles of a right triangle are complementary |
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Exterior angle theorem |
The measure of an exterior angle of a triangle is equal to the sum of the measure of the remote interior angles |
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Isosceles triangle conjecture |
The base angles of an isosceles triangle are congruent. The segment from the vertex to the midpoint of the base of an isosceles triangle is perpendicular to the base and bisects the vertex angle. This segment from the vertex to the midpoint of the base of an isosceles triangle divides the isosceles triangle into two congruent triangles |
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Incenter |
Three angle bisectors intersect |
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Circumcenter |
The point at which three perpendicular bisectors intersect |
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Centriod |
The point at which three medians intersect |
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Or thickener |
Three altitudes intersect |
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Reflection of the x axis |
(x,y) ~ (x,-y) |
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Reflection of y axis |
(x,y) ~ (-x,y) |
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Reflection the line y=x |
(x,y) ~ (y,x) |
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Rotation 180 about the orgin |
(x,y) ~ (-x,-y) |
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Rotation of 90 |
(x,y)~(-y,x) |
