Answer:
Step-by-step explanation:
Sum of length of any two sides of a triangle is greater than length of third side.
(d). < 20
The measure of the third side of the triangle is < 20, the correct option is D.
An Isosceles triangle is a triangle whose two sides are equal in length, and so two angles are also equal in measure.
The isosceles triangle has equal side of 10.
According to the theorem,
The length of the third side is always less than the sum of the two sides of a triangle.
Let the third side be x
Then,
x < 10+10
x < 20
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