FreeMath
Grade 5medium

Triangles Properties Practice

Explore triangle properties including area, perimeter, and angle relationships. Work with equilateral, isosceles, scalene, and right triangles.

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All 20 Practice Problems

Every question in this set. Solve them on paper, or use the interactive tool above for instant feedback and hints.

  1. 1.Triangle: base=6, height=8. Area = ?
  2. 2.Triangle: sides 3, 4, 5. Perimeter = ?
  3. 3.Triangle: base=10, height=6. Area = ?
  4. 4.Sum of angles in triangle = ?
  5. 5.Equilateral triangle: side=9. Perimeter = ?
  6. 6.Triangle: angles 60, 60, ?
  7. 7.Triangle: angles 90, 45, ?
  8. 8.Triangle: base=12, height=5. Area = ?
  9. 9.Isosceles triangle: legs=7, base=6. Perimeter = ?
  10. 10.Triangle: angles 90, 30, ?
  11. 11.Triangle: base=8, height=9. Area = ?
  12. 12.Scalene triangle: sides 5, 6, 7. Perimeter = ?
  13. 13.Right triangle: legs 6 and 8. Hypotenuse = ?
  14. 14.Triangle: angles 70, 50, ?
  15. 15.Equilateral triangle: side=12. Perimeter = ?
  16. 16.Triangle: base=15, height=8. Area = ?
  17. 17.Right triangle: legs 5 and 12. Hypotenuse = ?
  18. 18.Triangle: angles 40, 80, ?
  19. 19.Triangle: base=14, height=10. Area = ?
  20. 20.Right triangle: legs 8 and 15. Hypotenuse = ?
Show answer key
  1. 1.Triangle: base=6, height=8. Area = ? Answer: 24
  2. 2.Triangle: sides 3, 4, 5. Perimeter = ? Answer: 12
  3. 3.Triangle: base=10, height=6. Area = ? Answer: 30
  4. 4.Sum of angles in triangle = ? Answer: 180
  5. 5.Equilateral triangle: side=9. Perimeter = ? Answer: 27
  6. 6.Triangle: angles 60, 60, ? Answer: 60
  7. 7.Triangle: angles 90, 45, ? Answer: 45
  8. 8.Triangle: base=12, height=5. Area = ? Answer: 30
  9. 9.Isosceles triangle: legs=7, base=6. Perimeter = ? Answer: 20
  10. 10.Triangle: angles 90, 30, ? Answer: 60
  11. 11.Triangle: base=8, height=9. Area = ? Answer: 36
  12. 12.Scalene triangle: sides 5, 6, 7. Perimeter = ? Answer: 18
  13. 13.Right triangle: legs 6 and 8. Hypotenuse = ? Answer: 10
  14. 14.Triangle: angles 70, 50, ? Answer: 60
  15. 15.Equilateral triangle: side=12. Perimeter = ? Answer: 36
  16. 16.Triangle: base=15, height=8. Area = ? Answer: 60
  17. 17.Right triangle: legs 5 and 12. Hypotenuse = ? Answer: 13
  18. 18.Triangle: angles 40, 80, ? Answer: 60
  19. 19.Triangle: base=14, height=10. Area = ? Answer: 70
  20. 20.Right triangle: legs 8 and 15. Hypotenuse = ? Answer: 17

About This Practice

These 20 problems develop understanding of triangle geometry fundamentals.

Want more practice? See all Grade 5 practice →