Pyramidsare alsotrianglesSandwichesare a typeof triangleIf all the anglesare less than90 degrees,then it is anacute angle.One of theangles is aright angle= 90º. Trianglescan onlyhave threesidesA triangleis a 2-DshapeAn isoscelestriangle hastwo sidesthat are thesame.Trianglesadd up to180degreesEach anglein anequilateraltriangle is 60degreesBridges canbe made upof triangles.The longestside of a right-angled triangleis called thehypotenuse. An isoscelestriangle They have2 interior anglesthat are the same.These are calledthe base angles. TriangleshavethreesidesIn a righttriangle, theother twoangles willadd up to 90º A trianglehas threecornersEach side ofanequilateraltriangle is 60degrees.Slashes in atriangle helptell you if thetriangle hasequal sides.Trianglelines cannever becurvedArea of atriangle islength xwidth dividedby 2If one of theangles is greaterthan 90 degrees,then it can also becalled an obtusetriangle.All of atriangle'ssides arestraightThis famoustriangle is intheCaribbean.What is it?Anequilateraltriangle hasthree equalsidesPyramidsare alsotrianglesSandwichesare a typeof triangleIf all the anglesare less than90 degrees,then it is anacute angle.One of theangles is aright angle= 90º. Trianglescan onlyhave threesidesA triangleis a 2-DshapeAn isoscelestriangle hastwo sidesthat are thesame.Trianglesadd up to180degreesEach anglein anequilateraltriangle is 60degreesBridges canbe made upof triangles.The longestside of a right-angled triangleis called thehypotenuse. An isoscelestriangle They have2 interior anglesthat are the same.These are calledthe base angles. TriangleshavethreesidesIn a righttriangle, theother twoangles willadd up to 90º A trianglehas threecornersEach side ofanequilateraltriangle is 60degrees.Slashes in atriangle helptell you if thetriangle hasequal sides.Trianglelines cannever becurvedArea of atriangle islength xwidth dividedby 2If one of theangles is greaterthan 90 degrees,then it can also becalled an obtusetriangle.All of atriangle'ssides arestraightThis famoustriangle is intheCaribbean.What is it?Anequilateraltriangle hasthree equalsides

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