Answer:
c
Step-by-step explanation:
the value of x can be determined using Pythagoras theorem
The Pythagoras theorem : a² + b² = c²
where a = length
b = base
c = hypotenuse
The triangle is an isosceles triangle
An isosceles triangle has two opposite sides. If the two angles are equal , it means the triangle is an isosceles. Thus the value of the base is also 7
7² + 7²
49 + 49
= 98
√98 = 9.899 = 7√2
