Turn on thread page Beta
    • Thread Starter
    Offline

    11
    ReputationRep:
    the points (-3,19), (-15,1) and (9,1) are vertices of a triangle. Show that a circle centre (-3,6) can be drawn through the vertices of the triangle.

    I don't get what i'm supposed to show. From where i see it, the vertices can always be going through the centre of the circle. correct me if i'm wrong.
    Offline

    11
    ReputationRep:
    (Original post by Mme_Bonii)
    the points (-3,19), (-15,1) and (9,1) are vertices of a triangle. Show that a circle centre (-3,6) can be drawn through the vertices of the triangle.

    I don't get what i'm supposed to show. From where i see it, the vertices can always be going through the centre of the circle. correct me if i'm wrong.
    If the respective distances from (-3, 6) to the three points happened to be the same, they could all be seen as radii of a circle with centre (-3, 6).
    • Thread Starter
    Offline

    11
    ReputationRep:
    (Original post by old_engineer)
    If the respective distances from (-3, 6) to the three points happened to be the same, they could all be seen as radii of a circle with centre (-3, 6).
    What if they’re not the same?
    Posted on the TSR App. Download from Apple or Google Play
    Offline

    11
    ReputationRep:
    (Original post by Mme_Bonii)
    What if they’re not the same?
    Then I think it would be best if you posted your working.
    • Thread Starter
    Offline

    11
    ReputationRep:
    (Original post by old_engineer)
    Then I think it would be best if you posted your working.
    Nevermind, I got the answer. May I ask though, for example when a question says, a point lies on the circle centre (4,6). They mean the circle’s circumference right?
    Posted on the TSR App. Download from Apple or Google Play
    Offline

    11
    ReputationRep:
    (Original post by Mme_Bonii)
    Nevermind, I got the answer. May I ask though, for example when a question says, a point lies on the circle centre (4,6). They mean the circle’s circumference right?
    I think the wording would normally be "circle WITH centre (4,6)", but that aside I agree with your interpretation.
    • Thread Starter
    Offline

    11
    ReputationRep:
    (Original post by old_engineer)
    I think the wording would normally be "circle WITH centre (4,6)", but that aside I agree with your interpretation.
    Yea, i thought of the same thing. But all of the questions in the text book have ‘circle center’ instead of ‘circle with center’. Anyways, thank you for your help!!! I’m a little thick headed😂
    Posted on the TSR App. Download from Apple or Google Play
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: October 10, 2017
Poll
Do you think parents should charge rent?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

Equations

How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.