CUET Preparation Today
In the triangle, If AB = AC and ∠ABC = 72°, then ∠BAC is: |
36° 30° 54° 18° |
36° |
In a triangle ABC, AB = AC So, ABC is an isosceles triangle.
∠ABC = 72° Equal sides of a triangle form equal corresponding angle. ⇒ ∠ABC = ∠ACB = 72° In a triangle ABC, ∠ABC +∠ACB +∠BAC = 180° 72° + 72° +∠BAC = 180° ∠BAC = 36° |
