1. Area and Perimeter of Triangles

2. Overview
This set of tutorials provides 40 examples
of how to find the area and perimeter of
triangles.

3. Example 1. Finding the area of a scalene triangle when all
measures are expressed as numbers.

4. Example 2. Finding the area of a scalene triangle when all
measures are expressed as variable expressions.

5. Example 3. Finding the area of an acute triangle when all
measures are expressed as numbers.

6. Example 4. Finding the area of an acute triangle when all
measures are expressed as variable expressions.

7. Example 5. Finding the area of an obtuse triangle when all
measures are expressed as numbers.

8. Example 6. Finding the area of an obtuse triangle when all
measures are expressed as variable expressions.

9. Example 7. Finding the area of an isosceles triangle when all
measures are expressed as numbers.

10. Example 8. Finding the area of an isosceles triangle when all
measures are expressed as variable expressions.

11. Example 9. Finding the area of an equilateral triangle when all
measures are expressed as numbers.

12. Example 10. Finding the area of an equilateral triangle when all
measures are expressed as variable expressions.

13. Example 11. Finding the area of a right triangle when all measures
are expressed as numbers.

14. Example 12. Finding the area of a right triangle when all measures
are expressed as variable expressions.

15. Example 13. Finding the area of an isosceles right triangle when all
measures are expressed as numbers.

16. Example 14. Finding the area of an isosceles right triangle when all
measures are expressed as variable expressions.

17. Example 15. Finding the area of a 30°-60°-90° right triangle when
all measures are expressed as numbers.

18. Example 16. Finding the area of a 30°-60°-90° right triangle when
all measures are expressed as variable expressions.

19. Example 17. Finding the area of a 3-4-5 right triangle when all
measures are expressed as numbers.

20. Example 18. Finding the area of a 3-4-5 right triangle when all
measures are expressed as variable expressions.

21. Example 19. Finding the area of a 5-12-13 right triangle when all
measures are expressed as numbers.

22. Example 20. Finding the area of a 5-12-13 right triangle when all
measures are expressed as variable expressions.

23. Example 21. Finding the perimeter of a scalene triangle when all
measures are expressed as numbers.

24. Example 22. Finding the perimeter of a scalene triangle when all
measures are expressed as variable expressions.

25. Example 23. Finding the perimeter of an acute triangle when all
measures are expressed as numbers.

26. Example 24. Finding the perimeter of an acute triangle when all
measures are expressed as variable expressions.

27. Example 25. Finding the perimeter of an obtuse triangle when all
measures are expressed as numbers.

28. Example 26. Finding the perimeter of an obtuse triangle when all
measures are expressed as variable expressions.

29. Example 27. Finding the perimeter of an isosceles triangle when all
measures are expressed as numbers.

30. Example 28. Finding the perimeter of an isosceles triangle when all
measures are expressed as variable expressions.

31. Example 29. Finding the perimeter of an equilateral triangle when
all measures are expressed as numbers.

32. Example 30. Finding the perimeter of an equilateral triangle when
all measures are expressed as variable expressions.

33. Example 31. Finding the perimeter of a right triangle when all
measures are expressed as variables and numbers.

34. Example 32. Finding the perimeter of a right triangle when all
measures are expressed as variable expressions.

35. Example 33. Finding the perimeter of an isosceles right triangle
when all measures are expressed as variables and numbers.

36. Example 34. Finding the perimeter of an isosceles right triangle
when all measures are expressed as variable expressions.

37. Example 35. Finding the perimeter of a 30°-60°-90° right triangle
when all measures are expressed as variables and numbers.

38. Example 36. Finding the perimeter of a 30°-60°-90° right triangle
when all measures are expressed as variable expressions.

39. Example 37. Finding the perimeter of a 3-4-5 right triangle when all
measures are expressed as variables and numbers.

40. Example 38. Finding the perimeter of a 3-4-5 right triangle when all
measures are expressed as variable expressions.

41. Example 39. Finding the perimeter of a 5-12-13 right triangle when
all measures are expressed as variables and numbers.

42. Example 40. Finding the perimeter of a 5-12-13 right triangle when
all measures are expressed as variable expressions.