If the exterior sides of two adjacent angles are perpendicular, then the angles are angles. complementary right vertical supplementary

Step-by-step explanation:

The statement is defining two adjacent triangles that are on a right angles, that is, a angle equal to 90°. We can deduct this because they problem states that their exterior sides are perpendicular, these sides are forming a right angle, because that's what perpendicularity means.

Therefore, the right term that completes the statement is "complementary", because complementary angles are define as adjacent angles which sum is 90°.

the number of possible outcomes that do not show a 1 on the first spinner and show the number 4 on the second spinner is 2.

spinner 1 spinner 2

1                     1

1                     2

1                     3

1                     4

2                   1

2                   2

2                   3

2                   4   = not 1, and 4

3                   1

3                   2

3                   3

3                   4 = not 1, and 4

only 2 outcomes have passed the given condition.

step-by-step explanation:

answer is (b.

164 ft2)

a base  

18

b base  

7

h height  

8