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statement must be true.\u003Cbr>1) In the triangle shown, m∠1 = m∠2 and m∠3 = 40° .\u003Cbr>\u003Cbr>3\u003Cbr>1 2\u003Cbr>A. m∠2 + m∠3 = 180°\u003Cbr>B. m∠2 + m∠3 = 80°\u003Cbr>C. m∠2 + m∠3 = 110°\u003Cbr>D. m∠2 + m∠3 = 40°\u003Cbr>3) In the triangle shown, m∠1 = m∠3 and m∠2 = 40° .\u003Cbr>\u003Cbr>3\u003Cbr>1 2\u003Cbr>A. m∠1 + m∠2 = 110°\u003Cbr>B. m∠1 + m∠2 = 180°\u003Cbr>C. m∠1 + m∠2 = 40°\u003Cbr>D. m∠1 + m∠2 = 80°\u003Cbr>5) In the triangle shown, m∠1 = m∠3 and m∠3 = 70° .\u003Cbr>\u003Cbr>A. m∠1 + m∠2 = 180°\u003Cbr>B. m∠1 + m∠2 = 70°\u003Cbr>C. m∠1 + m∠2 = 110°\u003Cbr>D. m∠1 + m∠2 = 140° | 2)\u003Cbr>4)\u003Cbr>6) | In the triangle shown, m∠2 = m∠3 and m∠3 = 55° .\u003Cbr>\u003Cbr>3\u003Cbr>1 2\u003Cbr>A. m∠1 + m∠3 = 110°\u003Cbr>B. m∠1 + m∠3 = 125°\u003Cbr>C. m∠1 + m∠3 = 180°\u003Cbr>D. m∠1 + m∠3 = 55°\u003Cbr>In the triangle shown, m∠2 = m∠3 and m∠1 = 70° .\u003Cbr>\u003Cbr>A. m∠1 + m∠3 = 140°\u003Cbr>B. m∠1 + m∠3 = 125°\u003Cbr>C. m∠1 + m∠3 = 70°\u003Cbr>D. m∠1 + m∠3 = 180°\u003Cbr>In the triangle shown, m∠1 = m∠2 and m∠3 = 70° .\u003Cbr>\u003Cbr>A. m∠1 + m∠2 = 140°\u003Cbr>B. m∠1 + m∠2 = 180°\u003Cbr>C. m∠1 + m∠2 = 70°\u003Cbr>D. m∠1 + m∠2 = 110° |  |  | Answers |  |  |  |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- |\n|  |  |  |  |  | 1.  \u003Cbr>2.  \u003Cbr>3.  \u003Cbr>4.  \u003Cbr>5.  \u003Cbr>6.   |  |  |  |\n| 1-6 |  |  | 83 | 67 | 50 | 33 | 17 | 0 |\n\n[Math](Math www.CommonCoreSheets.com 1)[ www.CommonCoreSheets.com](Math www.CommonCoreSheets.com 1)[ 1](Math www.CommonCoreSheets.com 1)  \nUsing the Angle Sum of a Triangle  \nName: Answer Key  \n\n| Determine which statement must be true.\u003Cbr>1) In the triangle shown, m∠1 = m∠2 and m∠3 = 40° .\u003Cbr>\u003Cbr>3\u003Cbr>1 2\u003Cbr>A. m∠2 + m∠3 = 180°\u003Cbr>B. m∠2 + m∠3 = 80°\u003Cbr>C. m∠2 + m∠3 = 110°\u003Cbr>D. m∠2 + m∠3 = 40°\u003Cbr>3) In the triangle shown, m∠1 = m∠3 and m∠2 = 40° .\u003Cbr>\u003Cbr>3\u003Cbr>1 2\u003Cbr>A. m∠1 + m∠2 = 110°\u003Cbr>B. m∠1 + m∠2 = 180°\u003Cbr>C. m∠1 + m∠2 = 40°\u003Cbr>D. m∠1 + m∠2 = 80°\u003Cbr>5) In the triangle shown, m∠1 = m∠3 and m∠3 = 70° .\u003Cbr>\u003Cbr>A. m∠1 + m∠2 = 180°\u003Cbr>B. m∠1 + m∠2 = 70°\u003Cbr>C. m∠1 + m∠2 = 110°\u003Cbr>D. m∠1 + m∠2 = 140° | 2)\u003Cbr>4)\u003Cbr>6) | In the triangle shown, m∠2 = m∠3 and m∠3 = 55° .\u003Cbr>\u003Cbr>3\u003Cbr>1 2\u003Cbr>A. m∠1 + m∠3 = 110°\u003Cbr>B. m∠1 + m∠3 = 125°\u003Cbr>C. m∠1 + m∠3 = 180°\u003Cbr>D. m∠1 + m∠3 = 55°\u003Cbr>In the triangle shown, m∠2 = m∠3 and m∠1 = 70° .\u003Cbr>\u003Cbr>A. m∠1 + m∠3 = 140°\u003Cbr>B. m∠1 + m∠3 = 125°\u003Cbr>C. m∠1 + m∠3 = 70°\u003Cbr>D. m∠1 + m∠3 = 180°\u003Cbr>In the triangle shown, m∠1 = m∠2 and m∠3 = 70° .\u003Cbr>\u003Cbr>A. m∠1 + m∠2 = 140°\u003Cbr>B. m∠1 + m∠2 = 180°\u003Cbr>C. m∠1 + m∠2 = 70°\u003Cbr>D. m∠1 + m∠2 = 110° |  |  | Answers |  |  |  |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- |\n|  |  |  |  |  | 1.  C \u003Cbr>2.  B \u003Cbr>3.  A \u003Cbr>4.  B \u003Cbr>5.  C \u003Cbr>6.  D  |  |  |  |\n| 1-6 |  |  | 83 | 67 | 50 | 33 | 17 | 0 |\n\n[Math](Math www.CommonCoreSheets.com 1)[ www.CommonCoreSheets.com](Math www.CommonCoreSheets.com 1)[ 1](Math www.CommonCoreSheets.com 1)  \nUsing the Angle Sum of a Triangle  \nName:  \n\n| Determine which statement must be true.\u003Cbr>1) In the triangle shown, m∠1 = m∠2 and m∠3 = 40° .\u003Cbr>\u003Cbr>3\u003Cbr>1 2\u003Cbr>A. m∠2 + m∠3 = 180°\u003Cbr>B. m∠2 + m∠3 = 80°\u003Cbr>C. m∠2 + m∠3 = 110°\u003Cbr>D. m∠2 + m∠3 = 40°\u003Cbr>3) In the triangle shown, m∠1 = m∠3 and m∠2 = 40° .\u003Cbr>\u003Cbr>A. m∠1 + m∠2 = 110°\u003Cbr>B. m∠1 + m∠2 = 180°\u003Cbr>C. m∠1 + m∠2 = 40°\u003Cbr>D. m∠1 + m∠2 = 80° | 2) In the triangle shown, m∠2 = m∠3 and m∠3 = 55° .\u003Cbr>\u003Cbr>3\u003Cbr>1 2\u003Cbr>A. m∠1 + m∠3 = 110°\u003Cbr>B. m∠1 + m∠3 = 125°\u003Cbr>C. m∠1 + m∠3 = 180°\u003Cbr>D. m∠1 + m∠3 = 55°\u003Cbr>4) In the triangle shown, m∠2 = m∠3 and m∠1 = 70° .\u003Cbr>\u003Cbr>A. m∠1 + m∠3 = 140°\u003Cbr>B. m∠1 + m∠3 = 125°\u003Cbr>C. m∠1 + m∠3 = 70°\u003Cbr>D. m∠1 + m∠3 = 180° | Answers |  |  |  |\n| --- | --- | --- | --- | --- | --- |\n|  |  | 1.  \u003Cbr>2.  \u003Cbr>3.  \u003Cbr>4.   |  |  |  |\n| 1-4 |  | 75 | 50 | 25 | 0 |\n\nMath  \nModified  \n[www.CommonCoreSheets.com](www.CommonCoreSheets.com)  \n1  \nUsing the Angle Sum of a Triangle  \nName:  \n\n| Determine which statement must be true.\u003Cbr>1) In the triangle shown, m∠2 = m∠3 and m∠3 = 75° .\u003Cbr>\u003Cbr>3\u003Cbr>21\u003Cbr>A. m∠1 + m∠3 = 180°\u003Cbr>B. m∠1 + m∠3 = 105°\u003Cbr>C. m∠1 + m∠3 = 150°\u003Cbr>D. m∠1 + m∠3 = 75°\u003Cbr>3) In the triangle shown, m∠1 = m∠3 and m∠2 = 70° .\u003Cbr>\u003Cbr>A. m∠1 + m","cbCaiimon2WSlym1","https://ap.wps.com/l/cbCaiimon2WSlym1","pdf",466918,"English","# Determine which statement must be true\n## Triangle angle relationships","[{\"question\":\"What topic does this worksheet practice?\",\"answer\":\"It practices using the angle sum relationships of a triangle to determine correct equations for angle measures.\"},{\"question\":\"How are the angles in each problem specified?\",\"answer\":\"Each problem gives conditions such as equal angles (m∠1 = m∠2, m∠2 = m∠3, or m∠1 = m∠3) and one or more given angle values in degrees.\"},{\"question\":\"Are answer keys provided?\",\"answer\":\"Yes. The document includes an Answer Key section listing the correct choices for the problems.\"}]","Using the Angle Sum of a Triangle | PDF",1790771338,76]