a)
To draw: an isosceles
a)
Answer to Problem 9CE
The above figure the third side is length of 12cm.
Explanation of Solution
Calculation:
To draw an isosceles triangle with legs 7 cm long and a vertex angle of 120 degrees and to find length of its base.
Consider the following figure:
Therefore, from the above figure the third side is length of 12cm.
b)
To explain: the length of the base. The new triangle and the length of third side.
b)
Answer to Problem 9CE
The new triangle is an equilateral triangle.
The third side becomes 7cm.
And, the base is also 7 cm.
Explanation of Solution
Given information:
The legs at 7cm in length and the measure of the vertex angle to
Calculation:
To draw an isosceles triangle with legs 7 cm long and a vertex angle of 60 degrees and to find length of its base.
Consider the following figure:
Therefore, the new triangle is an equilateral triangle.
So, in equilateral triangle base are same.
Therefore, the third side becomes 7cm.
And, the base is also 7 cm.
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McDougal Littell Jurgensen Geometry: Student Edition Geometry
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