The number of triangles formed by connecting one of the vertices to the rest of the vertices is equal to n - 2. The answer is the first choice. As you may observed, for the quadrilateral, we can form 2 triangles. For pentagon, we may form 3 triangles.
Answer:
x=14.42192
Step-by-step explanation:
Angle A = 180 - 86 =94
The sum of the angles of a triangle is 180
sin A sin 46
------- = -----------
20 x
sin 94 * x = 20 sin 46
x = 20 sin 46 / sin 94
x=14.42192
If EG = 23 and EF = 12 then FG is equal to the length of 11.
Given that EG = 23 and EF = 12.
We are required to find the length of line segment FG.
We assume that EG and EF both are parts on a line.
A line segment is basically bounded by two distinct points on a line. Or we can say that a line segment is part of the line that connects two points. A line has no endpoints and extends to infinite points in both the direction but a line segment has two fixed or definite endpoints.
If EG=23 and EF=12 then, EG=EF+FG
FG=EG-EF
FG=23-12
FG=11
Hence if EG = 23 and EF = 12 then FG is equal to the length of 11.
Learn more about line segment at brainly.com/question/2437195
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Sedimentary rocks for the first one I think