Triangles

Edit Answers
123456789101112131415161718192021222324252627282930
Across
  1. 4. In a right triangle, the longest side is:
  2. 5. The sides opposite to equal angles of a triangle are ____.
  3. 6. For two triangles, if two angles and the included side of one triangle are equal to two angles and the included side of another triangle. Then the congruency rule is:
  4. 7. In ∆ ABC, BC = AB and ∠B = 80°. Then ∠A is equal to
  5. 8. If ABC is an equilateral triangle, then each angle equals to:
  6. 11. SSA is not a ___ for congruence of triangles
  7. 13. A closed figure formed by three intersecting lines is called a triangle
  8. 17. If two sides of a triangle are unequal, the angle opposite to the longer side is ______
  9. 19. ABC is an isosceles triangle in which altitudes BE and CF are drawn to equal sides AC and AB, respectively. Then BE ___ CF
  10. 22. Two triangles are congruent if three sides of one triangle are equal to the ____ of the other triangle.
  11. 23. Angles _____ to equal sides of an isosceles triangle are equal.
  12. 28. ∠A+∠B+∠C = 180° is ___ of a triangle
  13. 29. The full form of SSS is ___
  14. 30. The _____ of a triangle is the length of the outer boundary of a triangle.
Down
  1. 1. there are ____ criterions of congruence
  2. 2. If ABC and DBC are two isosceles triangles on the same base BC. Then ∠ABD ___ ∠ACD
  3. 3. A triangle in which two sides are equal is called:
  4. 9. A triangle in which ____ sides are equal is called an isosceles triangle.
  5. 10. triangles ABC and PQR, AB = AC, ∠C = ∠P and ∠B = ∠Q. The two triangles are Isosceles but not ____
  6. 12. The ____ angle of a triangle is always equal to the sum of the interior opposite angles.
  7. 14. A triangle having one of the three angles exactly 90° is a _____ triangle.
  8. 15. A triangle has three sides, three angles and three _____
  9. 16. the difference between the two sides of a triangle should be ___ than the third side.
  10. 18. A triangle having all its angles less than 90° is a ____ angled triangle.
  11. 20. In a pair of triangles if all three corresponding sides and three corresponding angles are exactly equal, then the triangles are said to be _____
  12. 21. In triangle ABC, if AB=BC and ∠B = 70°, ∠A will be:
  13. 24. The sum of all the angles of a triangle (of all types) is equal to _____.
  14. 25. Two triangles are congruent if the sides and angles of one triangle are equal to the ______ sides and angles of the other triangle.
  15. 26. A triangle having one of the three angles more than 90° is a ____ angles triangle.
  16. 27. Area of a triangle = ½ × ____ × Height