Extrusive volcanic rocks are formed on the surface of the earth and cool relatively quickly from lava erupted from a volcano. The rapid cooling of lava on the surface does not allow for visible crystals to form. The crystals are minute and most can only be seen under a microscope. Basalt is an example of an extrusive igneous rock.
Intrusive igneous rocks are formed when magma cools within the crust. This magma cools slowly and so crystals develop in these rocks. Granite is an intrusive igneous rock.
The slope of segment CD is 7. The length of segment BC is √50 units and the figure is a square.
Explanation:
Part A
Slope of a segment is calculated as the ratio of rise over run
In this case, C (8,3) and D(7,-4)
The slope is m=Δy/Δx
Δy=-4-3=-7
Δx=7-8=-1
m= -7/-1 =7
The slope is positive as seen in the graph for segment CD
Part B
To find length of a segment, the formula to apply is:

Given that B(3,8) and C(8,3) then
x₁=3,x₂=8,y₁=8,y₂=3
substitute values in equation as;

The formula used to find length of a segment
Part C
The geometric figure is a Square.The proof is that the length of the segments is equal, √50 units
Lean More
Properties of a square: brainly.com/question/1968511
Keywords : geometric, figure, coordinate, vertices,slope, segment
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Answer:
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Explanation:
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