Answer:
C
Step-by-step explanation:
Let's break down the definitions.
Supplementary = degrees add up to 180
Vertical = share a common vertex
Complementary = degrees add up to 90
Adjacent = share a common side and vertex
Since the degrees add up to 90 and don't share a common side/vertex, the angles are complementary.
Answer: 
Step-by-step explanation:
<u>Given information</u>
∡ 1 = 90°
∡ 2 = 50°
∡ 3 = x°
Total Angle = 180° <em>(Triangle angle sum theorem)</em>
<u>Given formula</u>
∡ 1 + ∡ 2 + ∡ 3 = Total Angle
<u>Substitute values into the formula</u>
(90) + (50) + (x) = (180)
<u>Combine like terms</u>
140 + x = 180
<u>Subtract 140 on both sides</u>
140 + x - 140 = 180 - 140

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Answer:
28
Step-by-step explanation:
I can’t see where someone authored this web pages and no I don’t know unless if you’ve shown me it.
Answer: 300 m
<u>Step-by-step explanation:</u>


= 150 + 150
= 300