Triangle ABC has vertices A(2,0), B(6,0) and C(4,5). Prove that the triangle is isosceles and not a right triangle

Explanation:

An isosceles triangle is one with two equal lengths.

To find the lengths of the sides with coordinates

(

x

1

,

y

1

)

,

(

x

2

,

y

2

)

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

)

we see

d

1

=

d

3Explanation:

An isosceles triangle is one with two equal lengths.

To find the lengths of the sides with coordinates

(

x

1

,

y

1

)

,

(

x

2

,

y

2

)

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

)

we see

d

1

=

d

3Explanation:

An isosceles triangle is one with two equal lengths.

To find the lengths of the sides with coordinates

(

x

1

,

y

1

)

,

(

x

2

,

y

2

)

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

)

we see

d

1

=

d

3

17.08

correct me if i am wrong.

none.

step-by-step explanation:

m

1

=

5

m1=5

b

=

−

1

b=-1

find the slope and y-intercept of the second equation.

tap for more

m

2

=

0

m2=0

b

=

−

6

b=-6

compare the slopes

m

m of the two equations.

m

1

=

5

,

m

2

=

0

m1=5,m2=0

compare the two slopes in the decimal form. if the slopes are equal, then the lines are parallel. if the slopes are not equal, then the lines are not parallel.

m

1

=

5

,

m

2

=

0

m1=5,m2=0