Triangles

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Across
  1. 3. a triangle having 1 of its angles more than 90 is called a____ angled triangle.
  2. 5. the____ of a triangle is the length of the outer boundary of the triangle.
  3. 8. A triangle has 3 sides, 3 angles and 3___.
Down
  1. 1. In a triangle, the longest side is:
  2. 2. Area of triangle= 1/2___ height.
  3. 4. the difference between the 2 sides of a triangle should be___ than the 3rd side.
  4. 6. The sides opposite to equal angles of a triangle are:
  5. 7. the sides of a triangle add up to 180. This is called the___ property of a triangle.