{"id":11307,"date":"2016-09-23T19:20:25","date_gmt":"2016-09-24T00:20:25","guid":{"rendered":"http:\/\/grockit.com\/blog\/?p=11307"},"modified":"2020-09-11T20:42:43","modified_gmt":"2020-09-11T20:42:43","slug":"understanding-top-front-end-dotted-lines","status":"publish","type":"post","link":"https:\/\/wpapp.kaptest.com\/study\/dat\/understanding-top-front-end-dotted-lines\/","title":{"rendered":"Understanding Top-Front-End Dotted Lines"},"content":{"rendered":"<p>In the Perceptual Ability Test (PAT) of the DAT, Top-Front-End or view recognition questions are some of the most challenging. You are presented with two\u00a0projections of an object and are expected to determine the third. However, Top-Front-End projections\u00a0are not mere outlines but also contain lines that represent where the visible and hidden edges of each\u00a0figure would appear. Hidden edges of the object that cannot be seen when viewing it straight on are\u00a0represented by dotted or dashed lines, whereas visible edges that can be seen when viewing it straight on are\u00a0represented by solid lines, like in this example:<br \/>\n<div  class='avia-image-container  av-styling-    avia-builder-el-0  el_before_av_promobox  avia-builder-el-first  avia-align-center '  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\"  ><div class='avia-image-container-inner'><div class='avia-image-overlay-wrap'><img class='wp-image-0 avia-img-lazy-loading-not-0 avia_image' src=\"http:\/\/www.kaptest.com\/blog\/prep\/wp-content\/uploads\/sites\/21\/2016\/09\/TFE-Views-285x300.png\" alt='' title=''   itemprop=\"thumbnailUrl\"  \/><\/div><\/div><\/div><br \/>\nThe top views of both of the above objects are the same. They show that the object possesses some\u00a0kind of step, but it\u2019s not clear which half is higher from the top view alone. This information is\u00a0conveyed in the front views. In the first case, since the front view contains a solid line, the lower step\u00a0must be in front. In the second case, however, the higher step is in front, hiding the lower step from\u00a0view. Hence, a dotted or dashed line is used to indicate the presence of the step; it is something that is\u00a0present in the shape but not visible when looking from the direction indicated.<br \/>\nThe correct interpretation of solid and dashed lines can be very helpful in more challenging problems.\u00a0Sometimes it can be very difficult to construct a full 3D image of the object from the two projections\u00a0given; in these situations, it may be much easier to focus on some finer features and determine whether\u00a0solid or dotted lines will be present in certain regions. The following example illustrates this point:<br \/>\n\t<div   class='av_promobox  avia-button-no   avia-builder-el-1  el_after_av_image  el_before_av_sidebar '>\t\t<div class='avia-promocontent'><p>\n<div  class='avia-image-container  av-styling-    avia-builder-el-2  avia-builder-el-no-sibling  avia-align-center '  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\"  ><div class='avia-image-container-inner'><div class='avia-image-overlay-wrap'><img class='wp-image-0 avia-img-lazy-loading-not-0 avia_image' src=\"http:\/\/www.kaptest.com\/blog\/prep\/wp-content\/uploads\/sites\/21\/2016\/09\/TFE-Question-1.png\" alt='' title=''   itemprop=\"thumbnailUrl\"  \/><\/div><\/div><\/div><\/p>\n<\/div><\/div><br \/>\n&nbsp;<br \/>\nIn this question, you are asked to select the correct top view. The 3D appearance of the object is\u00a0not immediately obvious from the two given projections. However, in the front view, you can see a\u00a0substructure represented by dotted lines. The dotted lines show that the substructure is present but\u00a0not visible from the front view. However, since the substructure is connected to the top of the object,\u00a0you can expect to see it in solid lines in the top view. Only choice (C), which shows a horizontally\u00a0centered, visible structure, fits that prediction.<br \/>\n<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Perceptual Ability Test (PAT) of the DAT, Top-Front-End or view recognition questions are some of the most challenging. You are presented with two\u00a0projections of an object and are expected to determine the third. However, Top-Front-End projections\u00a0are not mere outlines but also contain lines that represent where the visible and hidden edges of each\u00a0figure [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":26782,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[36],"tags":[820],"_links":{"self":[{"href":"https:\/\/wpapp.kaptest.com\/study\/wp-json\/wp\/v2\/posts\/11307"}],"collection":[{"href":"https:\/\/wpapp.kaptest.com\/study\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wpapp.kaptest.com\/study\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wpapp.kaptest.com\/study\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wpapp.kaptest.com\/study\/wp-json\/wp\/v2\/comments?post=11307"}],"version-history":[{"count":2,"href":"https:\/\/wpapp.kaptest.com\/study\/wp-json\/wp\/v2\/posts\/11307\/revisions"}],"predecessor-version":[{"id":36309,"href":"https:\/\/wpapp.kaptest.com\/study\/wp-json\/wp\/v2\/posts\/11307\/revisions\/36309"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wpapp.kaptest.com\/study\/wp-json\/wp\/v2\/media\/26782"}],"wp:attachment":[{"href":"https:\/\/wpapp.kaptest.com\/study\/wp-json\/wp\/v2\/media?parent=11307"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpapp.kaptest.com\/study\/wp-json\/wp\/v2\/categories?post=11307"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpapp.kaptest.com\/study\/wp-json\/wp\/v2\/tags?post=11307"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}