Question

(e) Name the exterior angle formed at the vertex B of the given triangle.

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Answer 1

Let the angle is x

Then. , as we know , (applying l.p.a)

B + x = 180°

x = 180° - B

or x = A + C

hope it helps you

Answer 2

Answer:

we know that the exterior angle is equals to the sum of two opposite angles this is known as exterior angle sum property.

Step-by-step explanation:

so in triangle ABC exterior angle formed at vertex B is equals to A+C ( THEY ARE THE OPPOSITE ANGLES)