area of a triangle (1) - lawfordmead.essex.sch.uk€¦ · area of a triangle (1) 1 complete the...
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Area of a triangle (1)
1 Completethesentencestodescribe
thetriangle.
Thetrianglehas fullsquares.
Thetrianglehas halfsquares.
Theareaofthetriangle
is cm2
2 Countsquarestoworkouttheareaofeachtriangle.
a) c)
area= cm2
b)
area= cm2 area= cm2
3 Countsquarestoestimatetheareaofeachtriangle.
a) c)
area= cm2 area= cm2
b)
area= cm2
Whyareyouranswersestimates?
4 a)Workouttheareasoftheshapesbycountingsquares.
area= cm2 area= cm2
©WhiteRoseMaths2019
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area= cm2
d)
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![Page 2: Area of a triangle (1) - lawfordmead.essex.sch.uk€¦ · Area of a triangle (1) 1 Complete the sentences to describe the triangle. The triangle has full squares. The triangle has](https://reader033.vdocuments.net/reader033/viewer/2022052723/5f0e70207e708231d43f3ece/html5/thumbnails/2.jpg)
b) Whatdoyounoticeaboutyouranswerstoparta)?
Explorethisusingotherrectangles.
c) Writeyourfindings.
5 Drawatrianglethathasanareaofapproximately15cm2
Compareanswerswithapartner.
©WhiteRoseMaths2019
6
DoyouagreewithEva’sestimate?
Talkaboutitwithapartner.
7 Drawtriangleswiththeseareas.
1cm22cm23cm24cm25cm26cm2
Talktoapartneraboutthebeststrategiesfordrawing
thetriangles.
I estimate the size of the triangle to be about 16 cm2
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