Math Vocabulary
Curran Bollom
1. Center of rotationThe point about which a figure is rotated.
2. CorrespondenceThe relationship between two or more objects that are matched.
3. Equilateral triangleA triangle with three congruent sides.
4. ImageA figure resulting from a transformation
5. Isosceles triangleA triangle with at least two congruent sides.
6. ParallelogramA quadrilateral with two pairs of parallel sides.
7. PlaneA flat surface that extends forever.
8. PointAn exact location in space.
9. PolygonA closed plane figure formed by three or more line segments that intersect only at their endpoints (vertices).
10. RayA part of a line that starts at one endpoint and extends forever.
11. Regular polygonA polygon with congruent sides and angles.
12. Regular tessellationA tessellation made up of congruent regular polygons.
13. Rhombus A parallelogram with all sides congruent.
14. RiseThe vertical change when the slope of a line is expressed as the ratio Rise/Run or “rise over run.”
15. Rotational symmetryA figure has rotational symmetry if it can be rotated less than 360 degrees
around a central point and coincide with the original figure.
16. RunThe horizontal change when the slope of a line is expressed as the ration Rise/Run or “rise over run.”
17. Scalene triangleA triangle with no congruent sides.
18. SlopeThe measure of the steepness of a line on a graph; the rise divided by the run.
19. Supplementary anglesTwo angles whose measures have a sum of 180 degrees.
20. TessellationA repeating pattern of plane figures that completely cover a plane with no gaps or overlaps.
21. TransformationA change in the size or position of a figure.
22. TranslationA movement (slide) of a figure along a straight line.
23. TransversalA line that intersects two or more lines.
24. TrapezoidA quadrilateral with exactly one pair of parallel sides.
25. Triangle Sum TheoremThe theorem that states that the measures of the angles in a triangle add up to 180 degrees.
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center of rotation  correspondence  equilateral triangle  image  isosceles triangle  parallelogram  plane  point  polygon  ray  regular polygon  regular tessellation  rhombus  rise  rotational symmetry  run  scalene triangle  slope  supplementary angles  tessellation  transformation  translation  transversal  trapezoid  triangle sum theorem 

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