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

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