Area of Triangle: Find the Unknown Formula

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SUMMARY

The discussion focuses on deriving the area of a triangle without using any pre-existing area formulas. Participants suggest utilizing basic calculus and geometric manipulation, specifically the box method, to visualize the triangle's area as a rectangle. Key insights include the importance of understanding the area of a rectangle and using vector manipulation to construct a diagram that leads to the triangle's area formula. The conversation emphasizes foundational concepts in geometry rather than relying on memorized formulas.

PREREQUISITES
  • Basic calculus principles
  • Understanding of geometric shapes, particularly triangles and rectangles
  • Familiarity with vector manipulation
  • Knowledge of the box method for area calculation
NEXT STEPS
  • Research the derivation of the area of a triangle using geometric methods
  • Explore the box method for calculating areas of various shapes
  • Study vector manipulation techniques in geometry
  • Learn about basic calculus applications in geometry
USEFUL FOR

Students, educators, and anyone interested in foundational geometry concepts, particularly those looking to understand the derivation of area formulas without relying on established equations.

subhradeep mahata
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Homework Statement


Find the area of a triangle, assume that you don't know the formula of area of any other figure.

Homework Equations

The Attempt at a Solution


Well, i was trying to figure out how to find the area of a triangle out of nowhere, but could not get it. I want to know how it was formulated for the very first time. Please help me out (remember that you cannot use any other area formula) . You can use basic calculus, but not very advanced one.
 
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Can you cut the triangle and arrange the pieces so they make a rectangle?
 
Please show me how to do it.
 
subhradeep mahata said:
Please show me how to do it.
PF rules require YOU to make an attempt first, before asking for help.
 
subhradeep mahata said:

Homework Statement


Find the area of a triangle, assume that you don't know the formula of area of any other figure.
Not even the area of a rectangle?
 
Try using box method of area
 
subhradeep mahata said:

Homework Statement


Find the area of a triangle, assume that you don't know the formula of area of any other figure.

Homework Equations

The Attempt at a Solution


Well, i was trying to figure out how to find the area of a triangle out of nowhere, but could not get it. I want to know how it was formulated for the very first time. Please help me out (remember that you cannot use any other area formula) . You can use basic calculus, but not very advanced one.
Wrong requirement. USE knowledge of area of a rectangle! This will let you form a diagram like a construction to develop formula for area of a triangle.
 
You don't need to know anything else, just VECTOR and GEOMETRIC manipulation will suffice.

Capitalised are hints.

Thanks.
 
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subhradeep mahata said:
Find the area of a triangle, assume that you don't know the formula of area of any other figure.
Well, you can know the fromula of a triangle since it isn't any other figure.:wink:
 
  • #10
Start by defining area, I think that may lead to answer.
 

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