Question

can the exterior angle of triangle be a straight angle :​

Answer 1

Answer:

hyy friend

we can find it by a formula

each exterior angle = 360/n

so, triangle has three sides

so, 360/3= 120 degree

so , each exterier angle of a triangle is 120degree

so, the answer is no

Step-by-step explanation:

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Answer 2

Answer:

An exterior angle of a triangle cannot be a straight angle.

This is because a triangle has three angles in all which all add up to 180 degree. Sum of exterior and interior angle of a triangle is 180 degree. If the exterior angle is straight then there won't be a third interior angle for the triangle to form.