The following data were obtained from a repeated-measures research study. What is the value of MD for these data? 1st 2nd Subject #1 10 15 #2 4 8 #3 7 5 #4 11 6 a.3 b.3.5 c.4 d.4.5

there are infinitely many solutions.

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°.

answer is (b.

164 ft2)

a base  

18

b base  

7

h height  

8