the_taxi_tank

demonstration about equilateral triangle

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so i need to demonstrate that an equilateral triangle has got equal angles (all angles r de same) pls halp me internet is so empty about geometrical demonstrations. hav a nice day OwO

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Hello, I might be able to hint you in the right direction; 
-What have you tried so far?
-Are you familiar with some other basic triangle theorems that you may start from?

 

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1 hour ago, the_taxi_tank said:

so i need to demonstrate that an equilateral triangle has got equal angles (all angles r de same) pls halp me internet is so empty about geometrical demonstrations. hav a nice day OwO

To do this you need to know about isoceles triangles and their angles.

 

Do you know this?

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Draw a line from one of the vertices to the midpoint of the opposite side.  What can you say about the two triangles created?

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55 minutes ago, Country Boy said:

Draw a line from one of the vertices to the midpoint of the opposite side.  What can you say about the two triangles created?

 

A very good approach, probably the best one if your development of geometry has reached congruent triangles by this stage, but I fear that the OP has long gone.

+1

Edited by studiot

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