AlternateExteriorAnglesConverseIf the correspondingangles formed by twolines and atransversal arecongruent, then thelines are parallel.If a=b,thenac=bcDivision ofsomething intotwo equal orcongruent partsby a bisectorPart of aline thathas 2endpointsParallelPostulateA mark thatmodels/indicatesan exactposition andlocation in aspaceIf two lines areperpendicularto the sameline, then theyare parallelEndpointAny ray, segment, orline that intersects asegment at itsmidpoint. It divides asegment into twoequal parts at itsmidpointIdentityPropertyof DivisionA part of a line thatstarts from onepoint and extendsin one direction foran infinite amountof timeSlopes ofPerpendicularLinesTheorem(x1+x2/2,y1+y2/2)AlternateInteriorAnglesTheoremPlaneTwo or more linesthat go in the samedirections stayingthe same distanceapart. In addition,they neverintersect!If two lines are cut bya transversal and theconsecutive exteriorangles aresupplementary,then the two lines areparallelWhen two parallellines are cut by atransversal resultingin correspondingangles making themcongruentSubstitutionProp/POE√(x2−x1)^2+(y2−y1)^2If a = b, b =a; you canflip the sidesof anequation.If x = y,and y = z,then x = z.CoordinatePlaneAlternateExteriorAnglesConverseIf the correspondingangles formed by twolines and atransversal arecongruent, then thelines are parallel.If a=b,thenac=bcDivision ofsomething intotwo equal orcongruent partsby a bisectorPart of aline thathas 2endpointsParallelPostulateA mark thatmodels/indicatesan exactposition andlocation in aspaceIf two lines areperpendicularto the sameline, then theyare parallelEndpointAny ray, segment, orline that intersects asegment at itsmidpoint. It divides asegment into twoequal parts at itsmidpointIdentityPropertyof DivisionA part of a line thatstarts from onepoint and extendsin one direction foran infinite amountof timeSlopes ofPerpendicularLinesTheorem(x1+x2/2,y1+y2/2)AlternateInteriorAnglesTheoremPlaneTwo or more linesthat go in the samedirections stayingthe same distanceapart. In addition,they neverintersect!If two lines are cut bya transversal and theconsecutive exteriorangles aresupplementary,then the two lines areparallelWhen two parallellines are cut by atransversal resultingin correspondingangles making themcongruentSubstitutionProp/POE√(x2−x1)^2+(y2−y1)^2If a = b, b =a; you canflip the sidesof anequation.If x = y,and y = z,then x = z.CoordinatePlane

Geometry Bingo - 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. Alternate Exterior Angles Converse
  2. If the corresponding angles formed by two lines and a transversal are congruent, then the lines are parallel.
  3. If a=b, then ac=bc
  4. Division of something into two equal or congruent parts by a bisector
  5. Part of a line that has 2 endpoints
  6. Parallel Postulate
  7. A mark that models/indicates an exact position and location in a space
  8. If two lines are perpendicular to the same line, then they are parallel
  9. Endpoint
  10. Any ray, segment, or line that intersects a segment at its midpoint. It divides a segment into two equal parts at its midpoint
  11. Identity Property of Division
  12. A part of a line that starts from one point and extends in one direction for an infinite amount of time
  13. Slopes of Perpendicular Lines Theorem
  14. (x1+x2/2, y1+y2/2)
  15. Alternate Interior Angles Theorem
  16. Plane
  17. Two or more lines that go in the same directions staying the same distance apart. In addition, they never intersect!
  18. If two lines are cut by a transversal and the consecutive exterior angles are supplementary, then the two lines are parallel
  19. When two parallel lines are cut by a transversal resulting in corresponding angles making them congruent
  20. Substitution Prop/POE
  21. √(x2−x1)^2+(y2−y1)^2
  22. If a = b, b = a; you can flip the sides of an equation.
  23. If x = y, and y = z, then x = z.
  24. Coordinate Plane