Measuring with a protractor (2) · Measuring with a protractor (2) 1 Circle the greater angle 0in...

Preview:

Citation preview

  • Measuring with a protractor (2)

    1 Circlethegreaterangleineachpair.

    a)

    b)

    c)

    d)

    2 Whatisthesizeoftheanglemarkedineachdiagram?

    a) d)

    b) e)

    c) f)

    3

    a) Howdoyouknow,justbylookingattheangle,thatitisnot

    30degrees?

    b) WhatmistakedoyouthinkAnniehasmade?

    ©WhiteRoseMaths2020

    9080

    100

    70

    11060

    12050

    13040

    140

    30

    150

    20

    160

    10

    170

    0 180

    1800

    17010

    16020150

    30140

    40

    130

    50

    120

    60

    110

    70

    100

    80

    9080

    100

    70

    11060

    12050

    13040

    140

    30

    150

    20

    160

    10

    170

    0 180

    1800

    17010

    16020150

    30140

    40130

    50

    120

    60

    110

    70

    100

    80

    9080

    100

    70

    11060

    12050

    13040

    140

    30

    150

    20

    160

    10

    170

    0 180

    1800

    17010

    16020150

    30140

    40

    130

    50

    120

    60

    110

    70

    100

    80

    9080

    100

    70

    11060

    12050

    13040

    140

    30

    150

    20

    160

    10

    170

    0 180

    1800

    17010

    16020150

    30140

    40

    130

    50

    120

    60

    110

    70

    100

    80

    9080

    10070

    110

    60

    120

    50

    130

    40

    140

    30 150

    20 160

    10

    170

    0

    180

    180

    0170

    10

    160

    20

    150

    30

    140

    40

    130

    50

    120

    60

    110

    70

    100

    8090

    80

    100

    70

    110

    60

    12050

    13040

    14030

    150

    20

    160

    10

    170

    0

    180

    180

    0

    170

    10

    16020

    1503014040

    130

    50

    12060

    110

    70

    100

    80

    The angle marked is30 degrees.

    °

    °

    °

    °

    °

    °

  • ©WhiteRoseMaths2020

    4 Scottistryingtomeasuretheobtuseangle.

    WhatmistakehasScottmade?

    5 Measureeachoftheangles.

    a) c)

    b) d)

    6 Evaputsoneice-lollystickoveranotherice-lollystick.

    a) Estimatethesizeofthelargestanglebetweenthetwo

    ice-lollysticks.

    Myestimateis °.

    b) Measuretheangletocheckyourestimate.

    Theactualmeasurementis °.

    c) Measurethesizeofeachoftheanglesformedbytheice-lolly

    sticksandlabelthemonthediagram.

    d) Useice-lollystickstocreatedifferentsizedanglesand

    measurethem.

    9080

    100

    70

    11060

    12050

    13040

    140

    30

    150

    20

    160

    10

    170

    0 180

    1800

    17010

    16020150

    30140

    40

    130

    50

    120

    60

    110

    70

    100

    80

    °

    °

    °

    °

Recommended