[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-363024-105":59,"doc-detail-363024-en":131},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":124,"head_meta":126,"extra_data":128,"updated_unix":130},105,"en","triangle-angle-sum-b","Triangle Angle Sum - B","","This educational worksheet, titled Triangle Angle Sum (B), is designed for K-12 students to practice calculating missing interior angles of triangles. By applying the fundamental geometric principle that the sum of the interior angles of any triangle is always 180 degrees, students solve for the unknown variable x in various provided triangle diagrams. The document includes a series of numerical exercises, a dedicated word problem, and a complete answer key at the end, making it an excellent resource for classroom instruction or independent mathematics study and review.",{"@graph":69,"@context":123},[70,84,106],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":20,"@type":76,"position":81},"https://docshare.wps.com/document/exam/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/triangle-angle-sum-b/363024/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/triangle-angle-sum-b/363024.png","ImageObject",300,407,{"name":92,"@type":93},"Bulrr","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-09-23",true,{"@type":102,"interactionType":103,"userInteractionCount":105},"InteractionCounter",{"@type":104},"ViewAction",12,{"@type":107,"mainEntity":108},"FAQPage",[109,115,119],{"name":110,"@type":111,"acceptedAnswer":112},"What is the rule for the sum of interior angles in a triangle?","Question",{"text":113,"@type":114},"The three interior angles of any triangle always add up to 180 degrees.","Answer",{"name":116,"@type":111,"acceptedAnswer":117},"How do you find a missing angle x in a triangle?",{"text":118,"@type":114},"You can find the missing angle x by subtracting the sum of the other two known angles from 180 degrees, expressed as x = 180 - angle1 - angle2.",{"name":120,"@type":111,"acceptedAnswer":121},"What is the solution to the word problem given two angles of 52 and 91 degrees?",{"text":122,"@type":114},"Using the triangle angle sum rule, the third angle is 180 - 52 - 91, which equals 37 degrees.","https://schema.org",{"og:url":83,"og:type":125,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":127,"canonical":83},"index,follow",{"doc_id":129,"site_id":62},363024,1790498699,{"code":4,"msg":5,"data":132},{"doc_id":129,"user_id":133,"nickname":92,"user_avatar":134,"doc_module":4,"category_id":19,"category_name":20,"doc_title":65,"doc_description":67,"doc_content":135,"file_id":136,"file_url":137,"file_type":138,"file_size":139,"view_count":105,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":81,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":39,"preview_page_count":4},5909892115043,"https://ap-avatar.wpscdn.com/davatar_6f874abed73319feea01a86fa6f0fab8","Name:  \n______________________________________  \nTriangle Angle Sum ( B)  \nRemember: Triangle Angle Sum: the three interior angles of any triangle always add up to 180° .  \nFind x by solving: ∠1 + angle2 + x = 180° .  \nDirections: Find the missing angle x in each triangle. Write an equation and solve.  \n\n| \u003Cbr>1.) |  | °\u003Cbr>x =   | 2.) | | °\u003Cbr>x =   |\n| --- | --- | --- | --- | --- | --- |\n| 3.) | | °\u003Cbr>x =   | 4.) | |  |\n|  |  |  | °\u003Cbr>x =   |  |  |\n| 5.) | | °\u003Cbr>x =   | 6.) | |  |\n|  |  |  | °\u003Cbr>x =   |  |  |\n| 7.) | | °\u003Cbr>x =   | 8.) | | °\u003Cbr>x =   |\n\nMashup Math LLC | Al[l Rights Reserved | Get More K-12 Math Worksheets at www.mashupmath.com](l Rights Reserved | Get More K-12 Math Worksheets at www.mashupmath.com)  \n\n| 9.) | | °\u003Cbr>x =   | 10.) | |\n| --- | --- | --- | --- | --- |\n|  |  |  | °\u003Cbr>x =   |  |\n\nWord Problem  \n11.) A triangle has two angles measuring 52° and 91° . What is the angle measure of the third angle?  \nShow  \nyour  \nwork.  \nMashup Math LLC | Al[l Rights Reserved | Get More K-12 Math Worksheets at www.mashupmath.com](l Rights Reserved | Get More K-12 Math Worksheets at www.mashupmath.com)  \nANSWER KEY  \nAnswers:  \n1.) x = 180−50−80 = 50°  \n2.) x = 180−90−40 = 50°  \n3.) x = 180−60−60 = 60°  \n4.) x = 180−25−115 = 40°  \n5.) x = 180−70−65 = 45°  \n6.) x = 180−90−27 = 63°  \n7.) x = 180−35−35 = 110°  \n8.) x = 180−45−90 = 45°  \n9.) x = 180−72−68 = 40°  \n10.) x = 180−44−99 = 37°  \nWord Problem:  \n11.) x = 180−52−91 = 37°  \nMashup Math LLC | Al[l Rights Reserved | Get More K-12 Math Worksheets at www.mashupmath.com](l Rights Reserved | Get More K-12 Math Worksheets at www.mashupmath.com)","cbCaiabOV7VJyKgJ","https://ap.wps.com/l/cbCaiabOV7VJyKgJ","pdf",598790,"English","# Triangle Angle Sum Principles\n## Practice Problems\n## Word Problem\n## Answer Key","[{\"question\":\"What is the rule for the sum of interior angles in a triangle?\",\"answer\":\"The three interior angles of any triangle always add up to 180 degrees.\"},{\"question\":\"How do you find a missing angle x in a triangle?\",\"answer\":\"You can find the missing angle x by subtracting the sum of the other two known angles from 180 degrees, expressed as x = 180 - angle1 - angle2.\"},{\"question\":\"What is the solution to the word problem given two angles of 52 and 91 degrees?\",\"answer\":\"Using the triangle angle sum rule, the third angle is 180 - 52 - 91, which equals 37 degrees.\"}]","Triangle Angle Sum - B | PDF",1790149680]