22 The diagram represents a coastline - OCR - GCSE Maths - Question 22 - 2023 - Paper 3
Question 22
22 The diagram represents a coastline.
A, B and C are lighthouses.
A boat is
• the same distance from A and B
• the same distance from AB and BC.
Using a ruler an... show full transcript
Worked Solution & Example Answer:22 The diagram represents a coastline - OCR - GCSE Maths - Question 22 - 2023 - Paper 3
Step 1
Construct the perpendicular bisector of AB
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Place the compass point on A and draw an arc above and below the line segment AB.
Without changing the compass width, place the point on B and draw another arc that intersects the previous arcs.
Use a ruler to draw a line through the intersection points of the arcs. This line is the perpendicular bisector of AB.
Step 2
Construct the perpendicular bisector of BC
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Repeat the same process using points B and C. Place the compass point on B and draw arcs above and below line segment BC.
Using the same compass width, place the compass on point C and draw arcs that intersect the previous arcs.
Draw a line through the intersection points, which is the perpendicular bisector of BC.
Step 3
Identify the position of the boat
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The position of the boat will be at the intersection point of the two perpendicular bisectors (AB and BC).