Simplify the polynomial expression,
3s(-23 + 7) – 5(1 – 1)(41 – 3)
0
0
a. -2602 + 211 – 15
b.-202 + 141 – 2
c. 14x2 – 141 + 15
d. -26x2 + 563 – 15
0

step-by-step explanation:

where is the graph? need more info

1. 180°. the sum of the interior angles of a triangle is 180°, for the equilateral triangle that it has three equals side is 60°+60°+60°=180°.

2. 60°. each interior angle of a equilateral triangle is 60°

3. 120°. the measure of ∠m is 120°, the sum of the angles ∠m and ∠n is equal to 180°. so, in order to find the measure of ∠m, we have ∠m+∠n=180° > ∠m=180°-∠n > ∠m=180°-60°=120°.

4. 360°. the sum of the exterior angles of an equilateral triangle is ∠m+∠r+∠x=120°+120°+120°=360°. the exterior angles of any triangle always add 360°.