Question

the area of triangle ABC is 8 cm square in which ab is equal to AC is equals to 4 cm find the angle A​

Answer 1

Answer:

the angle A is equals to 60⁰ .

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Step-by-step explanation:

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Answer 2

Answer:

Since ABC is an isosceles triangle we have AB = AC.

AD is the bisector of external and CD is parallel to AB.

In a triangle an exterior angle is equal to the sum of two opposite interior angles.

Thus in triangle ABC, we have

Since AC intersects lines AD and BC at A and C respectively such that , alternate interior angles are equal.

Therefore, AD is parallel to BC.

Given that CD is parallel to AB.

Thus, ABCD is a parallelogram.