AI Mentor

Check Your IQ

Free Expert Demo

Try Test

Courses

Dropper NEET Course Dropper JEE Course Class - 12 NEET Course Class - 12 JEE Course Class - 11 NEET Course Class - 11 JEE Course Class - 10 Foundation NEET Course Class - 10 Foundation JEE Course Class - 10 CBSE Course Class - 9 Foundation NEET Course Class - 9 Foundation JEE Course Class -9 CBSE Course Class - 8 CBSE Course Class - 7 CBSE Course Class - 6 CBSE Course

Offline Centres

Q.

The midpoint of side BC of triangle ABC, with A (1, -4) and the mid-points of the sides through A being (2, -1) and (0, -12) is

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

a

(3, - 5)

b

(1, - 5)

c

(2, - 5)

d

(4, - 5)

answer is B.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

JEE

NEET

NEET

Foundation JEE

Foundation JEE

Foundation NEET

Foundation NEET

CBSE

CBSE

Detailed Solution

The triangle ABC with given vertices is drawn below.
Question Image

Question Image

From the figure we have,
The midpoint of AB = D
The midpoint of AC = E
The midpoint of BC = F
In △ABC we have,
Coordinates of the vertices A (1, -4)
Coordinates of the point D (2, -1)
Coordinates of the point E (0, -12)
Suppose coordinates of point B =

(x_{2}, y_{2})

,
Coordinate of point C =

(x_{3}, y_{3})

,
Coordinate of point F =

(x, y)

.
Thus, from midpoint formula,
Coordinates of

B,

\frac{1 + x_{2}}{2} = 2 and \frac{- 4 + y_{2}}{2} = - 1

On solving this we get,

x_{2} = 3, y_{2} = 2

So, the coordinates of B are (3,2)
Now, coordinates of C,

\frac{1 + x_{3}}{2} = 0 and \frac{- 4 + y_{3}}{2} = - 12

On solving this we get,

x_{3} = - 1, y_{3} = - 20

Coordinates of

C (- 1, - 20)

From the formula of midpoint coordinates of F,
Coordinates of

F

\frac{x_{2} + x_{3}}{2} = x

and

\frac{y_{2} + y_{3}}{2} = y

\frac{3 - 1}{2} = x

and

\frac{2 - 20}{2} = y

On solving we get,

x = 1, y = - 5

So, the coordinates of F

(1, - 5)

So, the coordinates of midpoint of BC = (1, -5)
Option 2 is correct.

Watch 3-min video & get full concept clarity

courses

No courses found

Related Blogs

Get ₹ 1 crore* worth scholarship for JEE / NEET / Foundation

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Online Course for IIT JEE

Best Online Course for NEET

Best Online Course for CBSE

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Get Expert Academic Guidance – Connect with a Counselor Today!

Related Blogs

Get ₹ 1 crore* worth scholarship for JEE / NEET / Foundation

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Online Course for IIT JEE

Best Online Course for NEET

Best Online Course for CBSE

best study material, now at your finger tips!

live classes
progress tracking
24x7 mentored guidance
study plan analysis

download the app

gplay

mentor

Download the App

gplay

personalised 1:1 online tutoring