How you use a coordinate plane in area and perimeter probelms

Mathematics

2 answers:

zimovet [89]3 years ago

8 0

Answer:

To use the coordinate plane to help you find the perimeter and area of various shapes, you first draw the shape on the coordinate plane and then you count the number of unit squares the shape takes up. For the perimeter, it's the number of unit squares that go around the shape.

Inessa [10]3 years ago

3 0

Answer:

You can use it to graph shapes.

Step-by-step explanation:

To put it simply, coordinate planes help you graph and measure out certain shapes, which in the end allows you to use it for area and perimeter problems.

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He measure of one angle of an octagon is twice that of the other seven angles. what is the measure of each angle? answer: ,

Scrat [10]

Answer:
measure of larger angle = 240 degrees
measure of each of the smaller angles = 120 degrees

Explanation:
In any polygon, the sum of measures of interior angles can be calculated using the following rule:
sum of interior angles = (n-2)*180 where n is the number of sides

Now, for an octagon, n=8, this means that:
sum of measures of interior angles = (8-2)*180 = 1080°

An octagon has 8 interior angles, one of which is twice the measure of the others.
Assume that each of the 7 smaller angles is x degrees and that the larger angle is 2x degrees

Computing their summation, we will find that:
x + x + x + x + x + x + x + 2x = 1080
9x = 1080
x = 120

This means that:
each one of the smaller angles = x = 120 degrees
the larger angle = 2x = 2 * 120 = 240 degrees

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