Please help .. Geometry .. No links please!
1 answer:
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When a line is given in the form
The slope of the line is m. So, in this case, the slope of is -1.
Given a slope , you find the slope of a perpendicular line
by imposing
So, if the given line has slope -1, a perpendicular line has slope given by
and thus
So, we want a line with slope 1 and passing through (9,2). Using the fomula
we get
Probably the last one
Use the equation for the area of a triangle 1/2(bxh)
Then multiply that number by 2 to get the area of the complete shape.
Use the equation for the area of a triangle 1/2(bxh)
Then multiply that number by 2 to get the area of the complete shape.