Question

answer this fast I'll mark as brainliest ​

Answer 1

Step-by-step explanation:

Given:

In a triangle ABC,

AB = AC

AB : BC = 2 :1

AN is perpendicular to BC

Observation:

Given that BC = 2 : 1 and we know that AB is equal to AC, therefore, the ratio of AB : AC : BC = 2 : 2 : 1.

Given that AB = AC, since both lengths are equal, it is an isosceles triangle.

AN is perpendicular to BC, therefore AN = NB

Define variable:

Let the length of BC = x

AB = 2x

BC = 2x

* See attached for the drawn visual representation of the question.

Proof:

Triangle ABN is a right angle triangle, therefore we can apply Pythagoras Theorem which states that a² + b² = c²

then see in image

Mark as brainliest