(a)
Prove
(a)
Explanation of Solution
Given:
Calculation:
The diagram is :
Consider the
So,
So, by AAS Postulate ,
Hence,
Hence proved.
(a)
The result in part (a) can be stated as a theorem about certain atltitudes.State this theorem in your own words.
(a)
Answer to Problem 21WE
In an isosceles
Explanation of Solution
Given:
From part (a) , we have :
Then ,
Calculation:
The diagram is :
Since
So, BD and CE are altitudes from the base angles.
Then , we proved in part (a),
So, we can state that :
In an isosceles triangle , the altitudes from the base angle are congruent.
Chapter 4 Solutions
McDougal Littell Jurgensen Geometry: Student Edition Geometry
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