The figure shows three exterior angles of triangle abc. show that the measure of angle 1 plus the measure of angle 2 plus the measure of angle 3 equals 360

Step-by-step explanation:

Let the angle near point A be .

Let the angle near point B be .

Let the angle near point C be .

Let the external angle near point A be .

Let the external angle near point B be .

Let the external angle near point C be .

According to exterior angle property,exterior angle of an angle is the sum of other two angles.

So,

According to angle sum property,the sum of angles in the triangle add to

false

step-by-step explanation:

b

step-by-step explanation:

it have 5 sides and 5 identicle angle.the rest does not have the same property as b.

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