Midpoint of a line segment

The Maths Habit Handout to print

Which point is exactly halfway along the line?
How could you check without a ruler?

Q. Fold the line so its two ends meet: the fold lands on Q.

What number is halfway between?

Halfway between the x values. Halfway between the y values.

Find the midpoint of AB.

	A	B	Midpoint
x	2	8	5
y	1	5	3

Find the midpoint of AB.

	A	B	Midpoint
x	2	8	5
y	6	2	4

Find the midpoint of AB.

	A	B	Midpoint
x	2	8	5
y	1	5	3

Find the midpoint of AB.

	A	B	Midpoint
x	1	7	4
y	3	7	5

Find the midpoint of AB.

	A	B	Midpoint
x	2	8	5
y	1	5	3

Find the midpoint of AB.

	A	B	Midpoint
x	2	7	4.5
y	8	3	5.5

Find the midpoint of AB.

	A	B	Midpoint
x	2	8	5
y	1	5	3

Find the midpoint of AB.

	A	B	Midpoint
x	8	2	5
y	6	2	4

Find the midpoint of AB.

	A	B	Midpoint
x	2	8	5
y	1	5	3

Find the midpoint of AB.

	A	B	Midpoint
x	4	4	4
y	2	9	5.5

Find the midpoint of AB.

Answer sheet

M (4, 5) is the midpoint of AB. A is (1, 2). Find B.
(7, 8)
A rectangle has opposite corners at (1, 1) and (7, 5). Where is its centre?
(4, 3)

Find the midpoint of the line segment joining (1, 2) and (6, 8).
(3.5, 5)
Find the midpoint of the line segment joining (−4, 5) and (2, −1).
(−1, 2)
M (3, 1) is the midpoint of AB. A is (−1, 4). Find the coordinates of B.
(7, −2)