CongruentCo-interiorAnglessupplementaryExternalangles(n-2)x180Angles ina semi-circleoctagonpolygonDiametertrianglehexagonIsoscelesTrianglecorrespondinganglesacuteTangent-radiusrulepentagonreflexRadiusobtuseAngles ona straightlineparallellinesInternalanglesverticallyoppositecomplementaryanglesat apointstriaghtlineScaleneTriangleperpendicularlinesalternateanglesSimilarrightangleCongruentCo-interiorAnglessupplementaryExternalangles(n-2)x180Angles ina semi-circleoctagonpolygonDiametertrianglehexagonIsoscelesTrianglecorrespondinganglesacuteTangent-radiusrulepentagonreflexRadiusobtuseAngles ona straightlineparallellinesInternalanglesverticallyoppositecomplementaryanglesat apointstriaghtlineScaleneTriangleperpendicularlinesalternateanglesSimilarrightangle

Geometry Vocabulary - Call List

(Print) Use this randomly generated list as your call list when playing the game. There is no need to say the BINGO column name. Place some kind of mark (like an X, a checkmark, a dot, tally mark, etc) on each cell as you announce it, to keep track. You can also cut out each item, place them in a bag and pull words from the bag.


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  1. Congruent
  2. Co-interior Angles
  3. supplementary
  4. External angles
  5. (n-2)x180
  6. Angles in a semi-circle
  7. octagon
  8. polygon
  9. Diameter
  10. triangle
  11. hexagon
  12. Isosceles Triangle
  13. corresponding angles
  14. acute
  15. Tangent-radius rule
  16. pentagon
  17. reflex
  18. Radius
  19. obtuse
  20. Angles on a straight line
  21. parallel lines
  22. Internal angles
  23. vertically opposite
  24. complementary
  25. angles at a point
  26. striaght line
  27. Scalene Triangle
  28. perpendicular lines
  29. alternate angles
  30. Similar
  31. right angle