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How to find perimeter of the triangle whose vertices are the ff.points A(6,2)B(4,3)C(0,1)

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I'm sure there are easier ways to do this but the "brute force" method is to label point A as x1, y1; point b as x2, y2 and point c as x3,y3. Then just do square root of the sum of: (x2-x1)squared+(y2-y1)squared. Save this into memory 'A'. Now do the same for x2,y2 to x3,y3 and add this to the number saved in 'A' and do it once more for x3, y3 to x1, y1 and add to the number in 'A' to get the result.

Posted on Dec 22, 2008

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Posted on Jan 02, 2017

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All three sides of a triangle are equal in length of one side is 2x+5 and one side is 4x-3 find the perimeter of the triangle


If all sides are equal then 2x + 5 = 4x - 3
2x = 8
x = 4

so the perimeter is 3 times either expression above
3 * (8 + 5) = 39
.

Jan 12, 2017 | The Computers & Internet

1 Answer

(9,7),(8,-3),and(2,-6) find the perimeter


From the three points you give, the perimeter appears to be the three sides of a triangle going from (9, 7) to (8, -3) to (2, -6) and back to (9, 7).

Or are you actually asking for something else? The length, perhaps? That would be about 31.5 .

Feb 13, 2014 | Samsung Cell Phones

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Khan academy


Since you have the coordinates of the three vertices, the most straightforward method is to calculate the length of the sides using the distance formula
d(P_1,P_2)=SQRT((X_1-X_2)^2+(Y_1-Y_2)^2)
where SQRT is the square root function, X_1, Y_1) are the coordinates of point P_1, etc.
With the three lengths available, use Heron's (sometimes called Hero's) to find the area.
Here is Heron's formula.
Let's call the lengths a, b, and c
Let p be the semi-perimeter p= (a+b+c)/2
Then
Area= SQRT [ p(p-a)(p-b)(p-c) ]
Make sure that there is a matching ) parenthesis to the one in the SQRT.

Alternatively,
You can choose the base as the side opposite the vertex (0,0)
Calculate the equation of the line that supports the base.
Calculate the equation of the line issuing from (0,0) and perpendicular t the base.
Calculate the coordinates of the intersection point , call it H, of the base and its perpendicular line (coming from (0,0)).
Calculate the distance OH, that is the height relative to the chosen base.
Use the formula Area= base*height/2

Now it is up to you to choose one of the two methods and calculate the area of that triangle. The second method involves more calculations than the first, and more possibilities of errors. Good Luck

Nov 06, 2013 | Mathsoft Computers & Internet

1 Answer

What is the area of the triangle with vertices (0,0),(-3,5),(2,-7)


Since you have the coordinates of the three vertices, the most straightforward method is to calculate the length of the sides using the distance formula
d(P_1,P_2)=SQRT((X_1-X_2)^2+(Y_1-Y_2)^2)
where SQRT is the square root function, X_1, Y_1) are the coordinates of point P_1, etc.
With the three lengths available, use Heron's (sometimes called Hero's) to find the area.
Here is Heron's formula.
Let's call the lengths a, b, and c

Let p be the semi-perimeter p= (a+b+c)/2
Then
Area= SQRT [ p(p-a)(p-b)(p-c) ]
Make sure that there is a matching ) parenthesis to the one in the SQRT.

Alternatively,
You can choose the base as the side opposite the vertex (0,0)
Calculate the equation of the line that supports the base.
Calculate the equation of the line issuing from (0,0) and perpendicular t the base.
Calculate the coordinates of the intersection point , call it H, of the base and its perpendicular line (coming from (0,0)).
Calculate the distance OH, that is the height relative to the chosen base.
Use the formula Area= base*height/2

Now it is up to you to choose one of the two methods and calculate the area of that triangle. The second method involves more calculations than the first, and more possibilities of errors. Good Luck

Nov 06, 2013 | The Learning Company Achieve! Math &...

1 Answer

What is the perimeter of a triangle on a grid


The perimeter of any triangle is the sum of the lengths of the three sides. Are you asking about a specific triangle? "On a grid" doesn't describe a triangle very well.

May 10, 2013 | Pool & Spa

1 Answer

What are the deck shuffleboard penalties?


Here is a list of shuffleboard penalties:

1. When players slides their own puck beyond the scoring triangle and into the "10 off" zone, 10 points are deducted from that player's total.

2. If a puck is knocked into the "10 off" zone by another player, the player whose puck was knocked into that zone will be deducted 10 points.

3. If a player's puck is touching the line of the "10 off" area on the shooting side before their puck is played, they will be deducted 5 points.

4. For any shot that lands on the sideline or off the side of the board will be deducted 10 points.

5. If any part of a player's body crosses the baseline while shooting a puck, that player is deducted 10 points.
6. If a player accidentally shoots another player's puck, they are deducted 10 points.
For more info go to:
http://www.ehow.com/about_5268271_deck-shuffleboard-rules.html

Jan 14, 2013 | Sport & Outdoor - Others

1 Answer

The height of equilateral triangle is 7root3cm find its perimeter


Let ABC be the equilateral triangle,
and PC be the line joining the mid point of A and C.
We know that equilateral triangle has equal angles which means

Now,
in triangle AHC
Sin(THETA) = AH/AC

That is...
Sin(60) = (7root3)/AC

or AC = (7root3)/Sin(60)

AC=14

Perimeter of equilateral triangle ABC = 3 x Side
= 3 x 14
= 42

Sep 03, 2010 | Computers & Internet

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