Question

Choose the correct method to find the sum of the interior angles of a triangle, where ∠1
, ∠2
, and ∠3
are the angles of a triangle.

Option A: (n−2)⋅180°


Option B: ∠1+∠2+∠3


Choose 1 for Option A, 2 for Option B, or 3 for both Option A and Option B.

(1 point)

Answer 1

The correct method to find the sum of the interior angles of a triangle is:

Option A: (n−2)⋅180°
(Here, n is the number of sides of the triangle, which is 3. So the sum of the interior angles of a triangle is (3-2)⋅180° = 180°.)

Option B: ∠1 + ∠2 + ∠3
(This expresses the sum of the angles as the addition of those angles, which also equals 180° for a triangle.)

Since both options are correct methods to arrive at the sum of the interior angles of a triangle, the answer is:

3 for both Option A and Option B.