Supplementary angles add up to 180°
-> The measure of an angle that is supplementary to a 71° angle is 180° - 71° = 129°
Answer:
I can't tell what the triangle is
Step-by-step explanation:
>, because .5 is greater that .0
<em>Answer</em><em>:</em>
the surface area of the rectangular pyramid below is 300 units2
