Correct Answer: E
Explanation:
Geometry Triangles
The perimeter of a triangle is the sum of all three
sides. In the case of an isosceles triangle, two of
the sides are equal.To determine the perimeter of
this triangle, it is necessary to know both the
length of an equal side and the length of the base
of the triangle.
- (1) Only gives the length of one side; NOT
sufficient.
- (2) Only gives the length of one side; NOT
sufficient.
Since it is unclear whether MN or NP is one of the equal sides, it is not possible to determine
the length of the third side or the perimeter of the triangle. The perimeter could be either ((2)(16)) +20 =52 or ((2)(20)) +16=56.
The correct answer is E; both statements together are still not sufficient.