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Geometryvocab

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Geometryvocab

1. 1. Geometry<br />vocabulary<br />
2. 2. Line segment<br />A part of a line. <br />It has 2 endpoints.<br />._____________.<br />
3. 3. line<br />A straight path that goes on forever in both directions.<br />It has no beginning.<br />It has no end.<br />-------------------<br />
4. 4. ray<br />Part of a line<br />It has an endpoint (starting point)<br />It goes on in one direction forever.<br />.-------------------<br />
5. 5. angle<br />2 rays with a common endpoint<br />There are 3 types of angles<br />Right angles: have a square corner<br />Acute angle: is smaller than a right angle<br />Obtuse angle: is larger than a right angle <br />
6. 6. Plane Figures<br />Are flat figures (shapes)<br />They can be open <br />Or closed<br />
7. 7. Polygon<br />Poly=many<br />Is a closed plane figure that has 3 or more sides.<br />The sides are line segments<br />Triangle (3 sides)<br />Square (4 sides)<br />Pentagon (5 sides)<br />
8. 8. Quadrilateral<br />A polygon with 4 sides and 4 angles<br />
9. 9. Parallelogram <br />A quadrilateral with 2 sets of parallel sides<br />
10. 10. Rectangle <br />A quadrilateral with 2 sets of parallel sides AND 4 right angles<br />
11. 11. Square<br />4 equal sides<br />4 right angles<br />2 sets of parallel sides<br />
12. 12. rhombus<br />4 equal sides<br />
13. 13. Trapezoid <br />A quadrilateral with 1 set of parallel sides<br />
14. 14. Parallel<br />Parallel are always the same distance apart.<br />If you extended forever, they’d never touch each other<br />
15. 15. Triangle<br />A polygon with 3 sides and 3 angles (corners)<br />
16. 16. Equilateral Triangle<br />All 3 sides are equal length<br />All three angles are the same size<br />
17. 17. Isosceles Triangle<br />2 sides are equal in length<br />2 angles are equal<br />
18. 18. Right Triangle<br />One angle is equal to 90 degrees<br />90 degrees = a right angle<br />
19. 19. Congruent <br />Shapes that are the same size and shape.<br />They may be flipped or turned.<br />
20. 20. Not congruent <br />May be a similar shape or size, but not the same.<br />
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