Answer:the 3rd one
Step-by-step explanation:
<h3>
Answer: B) Linear pair postulate</h3>
Explanation:
As the name implies, "linear pair" means the two angles combine to form a straight line of 180 degrees. Think of gluing the angles together.
As an example, let's say angle 1 was 50 degrees and angle 4 is 130 degrees. They combine to 50+130 = 180 which is a straight angle. I recommend using a protractor to help draw these angles.
a) C = 40 + 30t
b) 280 = 40 + 30t
30t = 240
t = 8
The plumber worked 8 hours
The number of edges of a polyhedron with 4 faces and 4 vertices will be 6.
<h3>What is a polygon?</h3>
The polygon is a 2D geometry that has a finite number of sides. And all the sides of the polygon are straight lines connected to each other side by side.
Using Euler's formula, the number of the edges does a polyhedron with 4 faces and 4 vertices have
We know the formula for the edges of the polyhedron will be
F + V = E + 2
The number of faces, vertices, and edges of a polyhedron are denoted by the letters F, V, and E.
Then we have
4 + 4 = E + 2
E = 8 - 2
E = 6
More about the polygon link is given below.
brainly.com/question/17756657
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Answer:
12×5 is 60÷2 is 30
Step-by-step explanation:
the area is 30m square
