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line. 1) |  | 1.\u003Cbr>2.\u003Cbr>3. | Answers |\n| --- | --- | --- | --- |\n| | |  |  |\n|  |  |  |  |\n|  |  |  |  |\n|  |  |  |  |\n| Together they measure\u003Cbr>2)\u003Cbr>| The missing angle is\u003Cbr>|  |  |\n| Together they measure\u003Cbr>3)\u003Cbr>\u003Cbr>Together they measure | The missing angle is\u003Cbr>?\u003Cbr>\u003Cbr>The missing angle is |  |  |\n\n[Math](Math www.CommonCoreSheets.com 9 1-3)[ www.CommonCoreSheets.com](Math www.CommonCoreSheets.com 9 1-3)[ 9](Math www.CommonCoreSheets.com 9 1-3)[ 1-3](Math www.CommonCoreSheets.com 9 1-3) 67 33 0  \nWhy the Angles of a Triangle Add to 180  \nName: Answer Key  \n\n| The three corners of the triangle are fitted together on a straight line. 1) |  | 1.\u003Cbr>2.\u003Cbr>3. | Answers\u003Cbr>180°, 66° |\n| --- | --- | --- | --- |\n| | |  |  |\n|  |  |  | 180°, 76° |\n|  |  |  | 180°, 94° |\n|  |  |  |  |\n| Together they measure 180°\u003Cbr>2)\u003Cbr>| The missing angle is 66°\u003Cbr>|  |  |\n| Together they measure 180°\u003Cbr>3)\u003Cbr>\u003Cbr>Together they measure 180° | The missing angle is 76°\u003Cbr>?\u003Cbr>\u003Cbr>The missing angle is 94° |  |  |\n\n[Math](Math www.CommonCoreSheets.com 9 1-3)[ www.CommonCoreSheets.com](Math www.CommonCoreSheets.com 9 1-3)[ 9](Math www.CommonCoreSheets.com 9 1-3)[ 1-3](Math www.CommonCoreSheets.com 9 1-3) 67 33 0  \nWhy the Angles of a Triangle Add to 180  \nName:  \n\n| The three corners of the triangle are fitted together on a straight line. 1) |  | 1.\u003Cbr>2.\u003Cbr>3. | Answers |\n| --- | --- | --- | --- |\n| | |  |  |\n|  |  |  |  |\n|  |  |  |  |\n|  |  |  |  |\n| Together they measure\u003Cbr>2)\u003Cbr>| The missing angle is\u003Cbr>|  |  |\n| Together they measure\u003Cbr>3)\u003Cbr>\u003Cbr>Together they measure | The missing angle is\u003Cbr>?\u003Cbr>\u003Cbr>The missing angle is |  |  |\n\nMath  \nModified  \n[www.CommonCoreSheets.com](www.CommonCoreSheets.com)  \n9  \n1-3  \n67 33 0  \n\n|  |  |  |\n| --- | --- | --- |","cbCaijdSUvyL0Dgx","https://ap.wps.com/l/cbCaijdSUvyL0Dgx","pdf",42844,"English","# Triangle Angle Sum Exercise\n## Problem Sets\n## Answer Key","[{\"question\":\"Why do the internal angles of a triangle add up to 180 degrees?\",\"answer\":\"When the three corners of a triangle are fitted together along a straight line, they form a 180-degree angle, demonstrating that the sum of the interior angles is equal to a straight line.\"},{\"question\":\"What is the goal of the exercises in this document?\",\"answer\":\"The goal is to practice calculating the measure of a missing angle in a triangle by applying the fundamental principle that the sum of all interior angles must equal 180 degrees.\"},{\"question\":\"How are the answers provided for the practice problems?\",\"answer\":\"The document includes an answer key that provides the required sum of 180 degrees and the specific degree measure for the missing angle in each of the three provided problems.\"}]","Why the Angles of a Triangle Add to 180 - Practice Worksheet | PDF",1790772047]