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A, B, and C are on the same line. Find the value of n. A (-6,7), B(-3,n), C (4,-2)

Determine whether the triangle with vertices A (-3,4), M(3,1), and Y(0,-2) is isosceles.​


Sagot :

Answer:

we see

d1=d3

Step-by-step explanation:

An isosceles triangle is one with two equal lengths.

To find the lengths of the sides with coordinates

(x1,y1),(x2,y2)

we use Pythagoras' theorem

d

=

(

x

2

x

2

)

2

+

(

y

2

y

1

)

2

from the information given

d

1

=

(

13

9

)

2

+

(

2

8

)

2

d

1

=

4

2

+

6

2

=

52

(

1

)

d

2

=

(

13

5

)

2

+

(

2

2

)

2

d

2

=

8

2

+

0

2

=

64

=

8

(

2

)

d

3

=

(

9

5

)

2

+

(

8

2

)

2

d

3

=

4

2

+

6

2

=

52

(

3

)