123, 185, 143, 137, 192, 185, 129, 143, 154, 165, 143, 138, 187, 176
is most appropriate for the data
A bin size of
shown above.
A. 69
B. 2
O C. 10
O D. 1

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°.

the first domain and range set to the left is matched with the top relation, and the second set the set in the middle goes with the bottom relation.

did you get the answer?