Pls help me....

[Buffalo buddy]

Please help me,my topic is related to Theorems of Triangle Inequality......

 

[Deleted member 4993]

View attachment 27922

Please help me,my topic is related to Theorems of Triangle Inequality......

Start with:

Triangle BDE is isosceles triangle \(\displaystyle \to \) mDBE = mDEB

Please show us what you have tried and exactly where you are stuck.

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Please share your work/thoughts about this problem

 

[Steven G]

View attachment 27922

Please help me,my topic is related to Theorems of Triangle Inequality......

Extend line BECA to the right. Also move point A to the right. Now what happens to <CED as point C gets further and further away from point E. That should answer the 1st question.
Same logic for #2

 

[Harry_the_cat]

I realise this question is supposed to be done WITHOUT using a protractor. But Buddy, grab a protractor and measure the angles, and then think about why >, < or = are appropriate.

 

[pka]

The measure of an external angle of a triangle equals the sum of the measures of the two remote interior angles.

 

[Buffalo buddy]

Thanks for the information and answer .......