Caiden got on a elevator and he forgot what floor he was going to so he pressed the last floor. The elevator ascended 12 floors, then descended 5 floors. Before Caided realized where he was, the elavator ascended 8 floors and Caiden got off. On what floor did Caiden get off

The answer is floor 15

Step-by-step explanation:

12-5=7

7+8=15

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°.