Question

The exterior angle of a triangle cannot be of measure
(a)180
(b) 120
(c)90

(d)
30​

Answer 1

Answer:

D

I HOPE YOU UNDERSTAND

Answer 2

The exterior angle of a triangle cannot be of measure  (a)180

• The question can be solved using:

1. Exterior Angle Property: The sum of the exterior angle of a triangle equals the sum of two contrary interior angles.
2. Angle Sum Property: The sum of all of the angles of a triangle equals one hundred eighty degrees.

• From the above theorems, we can conclude that the sum of any two angles of a triangle should be less than 180°. And the sum is the magnitude of the exterior angle.
• Thus, the exterior angle of a triangle cannot be of measure 180°.