Triangles

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Across
  1. 3. In a right angled triangle, the hypotenuse is always ____________the right angle.
  2. 5. What is a triangle called if all its sides have different lengths?
  3. 7. If you add up the length of all 3 sides you get this.
  4. 10. If all a triangle's angles are the same, how many lines of symmetry does it have?
  5. 11. Whose theorem do you use to calculate the length of sides in a right angled triangle?
  6. 13. What means an angle bigger than 90 degrees?
  7. 14. If you multiply half the length of the base by the height of a triangle, what do you get?
  8. 16. If exactly two of the angles of a triangle are the same, it is_______
Down
  1. 1. A right angled triangle's shortest sides are 3 cm and 4 cm long. How many cm long is the longest side?
  2. 2. The word for an angle smaller than 90 degrees.
  3. 4. This is the Latin for "equal sides"
  4. 6. Angles in a triangle add up to one hundred and ___________
  5. 8. You use this to measure angles
  6. 9. angles are measured in _______________
  7. 12. How many lines of symmetry does an isosceles triangle have?
  8. 15. Angles in a triangle add up to one hundred and ___________
  9. 17. How many degrees does every angle of an equilateral triangle have?