Worksheet Practice 12-3

HomeworkWorksheet Practice 12-3Mrs. Rivas

International Studies Charter School

𝒄𝟐=𝒂𝟐+𝒃𝟐

𝒙𝟐=𝟒𝟐+𝟏𝟎𝟐

𝒙=√𝟒𝟐+𝟏𝟎𝟐

𝒙=𝟏𝟎 .𝟖

𝒄𝟐=𝒂𝟐+𝒃𝟐

𝟗𝟐=𝟔𝟐+𝒃𝟐

√𝟗𝟐−𝟔𝟐=𝒃𝒃=𝟔 .𝟕

𝒙=𝟔 .𝟕+𝟔 .𝟕=𝟏𝟑 .𝟒

𝒄𝟐=𝒂𝟐+𝒃𝟐

𝟏𝟐𝟐=𝒙𝟐+𝟓𝟐

√𝟏𝟐𝟐−𝟓𝟐=𝒙𝟏𝟎 .𝟗=𝒙

HomeworkWorksheet Practice 12-3a = 1(136º)

Mrs. Rivas

HomeworkWorksheet Practice 12-3 17 = 1(a)

Mrs. Rivas

HomeworkWorksheet Practice 12-3360 – 100 – 136 = 124a = 124ºb = 62º

Mrs. Rivas

HomeworkWorksheet Practice 12-3a = 42 2 = 21º

b = 84 2 = 42º

c = (360 – 42 – 84) 2 = 117º

21º42º

117º117º

Mrs. Rivas

HomeworkWorksheet Practice 12-3a = 180 - 108 = 72º

b = 180 - 92 = 88º

c = 108 2 = 216 – 114 = 102º d = 88 2 = 176 – 102 = 74º

Mrs. Rivas

HomeworkWorksheet Practice 12-3a = 76 2 = 38º

b = 76 2 = 38º38º

Mrs. Rivas

HomeworkWorksheet Practice 12-4Mrs. Rivas Ida S. Baker H.S.

xº = ½(86 + 88)xº = ½(174)xº = 87

xº = ½(90 − 20)xº = ½(70)xº = 35

xº = ½(150 − 60)xº = ½(90)xº = 45

60º = ½(360 - x − x)60º = ½(360 − 2x)60º = 180 − x

120º = xº

38º = ½(220 - x − x)

360º - 140 = 220º

220º - x

38º = ½(220 − 2x)38º = 110 − x

72º = xº

90º = ½(x − 6º)90º = ½x − 3º93º = ½x

186º = xº

Worksheet Practice 12-3

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