TriangleshavethreesidesOne of theangles is aright angle= 90º. An isoscelestriangle They have2 interior anglesthat are the same.These are calledthe base angles. Slashes in atriangle helptell you if thetriangle hasequal sides.All of atriangle'ssides arestraightSandwichesare a typeof triangleIf all the anglesare less than90 degrees,then it is anacute angle.Trianglescan onlyhave threesidesThe longestside of a right-angled triangleis called thehypotenuse. A triangleis a 2-DshapeBridges canbe made upof triangles.Trianglesadd up to180degreesAn isoscelestriangle hastwo sidesthat are thesame.In a righttriangle, theother twoangles willadd up to 90º Trianglelines cannever becurvedThis famoustriangle is intheCaribbean.What is it?Each side ofanequilateraltriangle is 60degrees.If one of theangles is greaterthan 90 degrees,then it can also becalled an obtusetriangle.Anequilateraltriangle hasthree equalsidesArea of atriangle islength xwidth dividedby 2Pyramidsare alsotrianglesA trianglehas threecornersEach anglein anequilateraltriangle is 60degreesTriangleshavethreesidesOne of theangles is aright angle= 90º. An isoscelestriangle They have2 interior anglesthat are the same.These are calledthe base angles. Slashes in atriangle helptell you if thetriangle hasequal sides.All of atriangle'ssides arestraightSandwichesare a typeof triangleIf all the anglesare less than90 degrees,then it is anacute angle.Trianglescan onlyhave threesidesThe longestside of a right-angled triangleis called thehypotenuse. A triangleis a 2-DshapeBridges canbe made upof triangles.Trianglesadd up to180degreesAn isoscelestriangle hastwo sidesthat are thesame.In a righttriangle, theother twoangles willadd up to 90º Trianglelines cannever becurvedThis famoustriangle is intheCaribbean.What is it?Each side ofanequilateraltriangle is 60degrees.If one of theangles is greaterthan 90 degrees,then it can also becalled an obtusetriangle.Anequilateraltriangle hasthree equalsidesArea of atriangle islength xwidth dividedby 2Pyramidsare alsotrianglesA trianglehas threecornersEach anglein anequilateraltriangle is 60degrees

Triangles - 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. Triangles have three sides
  2. One of the angles is a right angle = 90º.
  3. An isosceles triangle They have 2 interior angles that are the same. These are called the base angles.
  4. Slashes in a triangle help tell you if the triangle has equal sides.
  5. All of a triangle's sides are straight
  6. Sandwiches are a type of triangle
  7. If all the angles are less than 90 degrees, then it is an acute angle.
  8. Triangles can only have three sides
  9. The longest side of a right-angled triangle is called the hypotenuse.
  10. A triangle is a 2-D shape
  11. Bridges can be made up of triangles.
  12. Triangles add up to 180 degrees
  13. An isosceles triangle has two sides that are the same.
  14. In a right triangle, the other two angles will add up to 90º
  15. Triangle lines can never be curved
  16. This famous triangle is in the Caribbean. What is it?
  17. Each side of an equilateral triangle is 60 degrees.
  18. If one of the angles is greater than 90 degrees, then it can also be called an obtuse triangle.
  19. An equilateral triangle has three equal sides
  20. Area of a triangle is length x width divided by 2
  21. Pyramids are also triangles
  22. A triangle has three corners
  23. Each angle in an equilateral triangle is 60 degrees