3 Labeltheangles:acute,obtuseorrightangle.

a) d)

b) e)

c) f)

4 Tickalltheacuteangles.

1 Completethesentences.

Usethewordbanktohelpyou.

90

180

greater

less

a) Arightangleis degrees.

b) Anacuteangleis than degrees.

c) Anobtuseangleis than degrees

butlessthan degrees.

2 Matchtheanglestothelabels.

rightangle

acuteangle

obtuseangle

Identify angles

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8

A B

DoyouagreewithTeddy?

Explainyouranswer.

9 Arethestatementsalwaystrue,sometimestrueornevertrue?

Explainyouranswer.

a) An obtuse angle is a greater turn than an acute angle.

b) An acute angle is a greater turn than a right angle turn.

c) If you turn through two acute angles you will have turned through an obtuse angle.

5 Tickalltheobtuseangles.

6 Labeltheangles:acute,obtuseorrightangle.

a) c)

b) d)

7 Istheangleacute,obtuseorarightangle?

a) 35° d) 89°

b) 99° e) 121°

c) 90° f) 179°

Howdoyouknow?

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Angle B is obtuse because it’s bigger than

the right angle.

3 Circlethegreatestangleineachdiagram.

4 Hereisanangle.

a) Drawasmalleranglethan105°intheboxontheleft.

b) Drawagreateranglethan105°intheboxontheright.

c) Isthisstatementtrueorfalse?

The angles are in ascending order of size.

�

Explainyouranswer.

5 Ordertheanglesfromgreatesttosmallest.

a)

1 Herearetwoangles.

A B

a) Whichangleisobtuse?

b) Whichangleisacute?

Howdoyouknow?

2 Herearetwoangles.

X Y

a) WhattypeofangleisangleX?

b) WhattypeofangleisangleY?

c) Whichangleissmaller?

Howdoyouknow?

Compare�and�order� angles

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105°

a b c d

7 Fouranglesarelabelledinthequadrilateral.

a) Whichoftheanglesareacuteangles?

b) Whichoftheanglesareobtuseangles?

c) Writetheanglesinorderofsize,startingwiththesmallest.

8 Aninteriorangleismarkedineachpolygon.

A B C D E

Ordertheinterioranglesofthepolygonsfromsmallest

togreatest.

Whatdoyounoticeaboutthenumberofsidesapolygonhas

andthesizeofitsinteriorangle?

b)

c)

6 Compareandordertheanglesfromsmallesttogreatest.

©WhiteRoseMaths2020

a b c d

a b c d

a

j

k

l

m

d

b

e

c

f

3 Ronisclassifyingtriangles.

a) Ronisincorrect.

Explainwhy.

b) Whattypeoftriangleisit?

4 Annieisidentifyingshapes.

DoyouagreewithAnnie?

Explainyouranswer.

1 Herearesomeshapes.

a) Tickthepolygons.

b) Talktoapartnerabouttheshapesyouhavenotticked.

Whyaretheynotpolygons?

c) Writeadefinitionofapolygon.

Compareyourdefinitionwithapartner’s.

2 Tickthetriangles.

Foranyshapesyouhavenotticked,talktoapartnerabout

whysomebodymightthinktheyaretriangles.

Triangles

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This is an upside down triangle.

This shape has 3 sides, so it

is a triangle.

7 Draweachtriangleinthegrid.

a)isosceles b) right-angled c) scalene

Whichtrianglewashardesttodraw?

8 Thediagramshowsanequilateraltriangleandasquare.

Theperimeterofthesquareis100cm.

Workouttheperimeterofthecompoundshape.

perimeter= cm

5 Matchthetypeoftriangletothedefinition.

scalene2sidesand

2anglesequal

equilateralnosidesor

anglesequal

isoscelesallsidesand

allanglesequal

6 Labeleachtriangleaseitherequilateral,isoscelesorscalene.

Youwillneedtomeasurethesidelengths.

A B C

D E F

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2 Herearesomequadrilaterals.

A B C

D E

a) Markanyrightanglesontheshapes.

Oneshapehasbeendoneforyou.

b) Markanypairsofparallellines.

Oneshapehasbeendoneforyou.

c) Whichshapesdonothaveanyrightangles?

�

d) Whichshapeshavetwopairsofparallellines?

�

e) Whichshapeshavefourequalsides?

�

Compareanswerswithapartner.

1 Usethewordbanktolabeleachquadrilateral.

rhombus

parallelogram

trapezium

rectangle

square

a) d)

b) e)

c)

Howdidyouknowwhichshapewaswhich?

Quadrilaterals

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4 Drawtheshapesonthegrid.

a) square b)trapezium c)parallelogram

5

DoyouagreewithRosie?

Explainyouranswer.

6 CompletethisFrayerModeltodescribeaquadrilateral.

3 Completethetable.

Shape Polygon?Numberofsides

Numberofrightangles

Numberofpairs

ofparallelsides

Numberofequal

sides

Yes 4 4 2 2pairs

2

Whatisthesameaboutalloftheshapes?

Whatisdifferent?

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This is a square because it has got

4 equal sides.

Mydefinition Keycharacteristics

Example Non-exampleQuadrilateral

3 Drawonelineofsymmetryoneachshape.

a) e)

b) f)

c) g)

d) h)

Istheremorethanonepossibleanswerforeach?

1 Ticktheshapesthathaveatleastonelineofsymmetry.

2 Ticktheshapesthatshowacorrectlineofsymmetry.

Howdidyouknowwhichshapestotick?

Lines of symmetry

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6 Hereare3logos.

Whodoyouagreewith?

Talkaboutitwithapartner.

7 Shadeamaximumof8squarestomakeasymmetricalshape.

Compareanswerswithapartner.Howmanydifferentshapes

canyoumake?

4 Sorttheshapesintothetable.

Thefirstonehasbeendoneforyou.

A B C D

E F G H

1lineofsymmetry

Morethan1lineof

symmetry

Nolinesofsymmetry

Triangle

Quadrilateral A

5 Tommyisfoldingapapercircletofindlinesofsymmetry.

DoyouagreewithTommy?

Talkaboutitwithapartner.

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A circle has lots of lines of symmetry!

AOA

All of these logos have lines of symmetry because they’re circles.

I disagree because the design on them isn’t symmetrical.

Dora

Mo

2 Completetheshapesaccordingtothelinesofsymmetry.

Nameeachshapeonceyouhavedrawnit.

a) c)

b) d)

3 Reflecttheshapesinthegivenmirrorline.

a) b)

1 Shadesquarestomakethepatternssymmetrical.

a) c)

b) d)

Comparemethodswithapartner.

Complete a symmetric figure

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6 Completethesymmetricfigures.

a) c)

b) d)

7 Completethesymmetricfigure.

Createyourownquestionlikethisforapartner.

4 Eachpatternissymmetricalaroundthemirrorline.

Completethepatterns.

a)

b)

c)

5 Shadesquarestomakethepatternssymmetrical.

a) b)

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