Shapes on coordinate grids
I can calculate perimeter and area of shapes on coordinate grids.
Shapes on coordinate grids
I can calculate perimeter and area of shapes on coordinate grids.
Lesson details
Key learning points
- Shapes on coordinate grids do not often have their measurements clearly written.
- Instead, you are expect to calculate the desired lengths.
- This may involve Pythagoras' theorem, shape properties or equations of lines for example.
Common misconception
"The graphs of two straight line equations should always intersect at integer points on a coordinate grid."
The location with which the graphs of two straight line equations intersect can be found by simultaneously solving the pair of equations. The graphs of two straight line equations can intersect at either integer or non-integer values.
Keywords
Equation of a straight line - An equation of a line is any equation whose graph forms a straight line. These equations can be written in the form y = mx + c.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Video
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Starter quiz
6 Questions
Exit quiz
6 Questions
length of line segment EF -
7.07 units (2 d.p.)
length of line segment FG -
15 units
length of line segment GH -
3 units
length of line segment HI -
6.32 units (2 d.p.)
length of line segment IE -
4 units
perimeter of pentagon EFGHI -
35.4 units (1 d.p.)
area of rectangle JONM -
50 units²
area of triangle JMK -
10 units²
area of triangle KNL -
6 units²
area of triangle JOL -
15 units²
area of triangle JKL -
19 units²
