[Script Info] Title: [Events] Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text Dialogue: 0,0:00:00.00,0:00:01.42,Default,,0000,0000,0000,, Dialogue: 0,0:00:01.42,0:00:07.25,Default,,0000,0000,0000,,A parallelogram is a blank with\Ntwo sets of parallel lines. Dialogue: 0,0:00:07.25,0:00:09.28,Default,,0000,0000,0000,,So let's see what\Nthe options are. Dialogue: 0,0:00:09.28,0:00:10.88,Default,,0000,0000,0000,,So one option is\Na quadrilateral. Dialogue: 0,0:00:10.88,0:00:13.40,Default,,0000,0000,0000,,And a parallelogram is\Ndefinitely a quadrilateral. Dialogue: 0,0:00:13.40,0:00:16.12,Default,,0000,0000,0000,,A quadrilateral is\Na four-sided figure, Dialogue: 0,0:00:16.12,0:00:18.35,Default,,0000,0000,0000,,and it is definitely\Na four-sided figure. Dialogue: 0,0:00:18.35,0:00:21.97,Default,,0000,0000,0000,,A parallelogram is\Nnot always a rhombus. Dialogue: 0,0:00:21.97,0:00:25.83,Default,,0000,0000,0000,,A rhombus is a special case of a\Nparallelogram where not only do Dialogue: 0,0:00:25.83,0:00:27.68,Default,,0000,0000,0000,,you have to sets\Nof parallel lines Dialogue: 0,0:00:27.68,0:00:31.56,Default,,0000,0000,0000,,as your sides, two\Nsets of parallel sides, Dialogue: 0,0:00:31.56,0:00:34.41,Default,,0000,0000,0000,,but all of the sides are the\Nsame length in a rhombus. Dialogue: 0,0:00:34.41,0:00:37.61,Default,,0000,0000,0000,,And a square is a special\Ncase of a rhombus where Dialogue: 0,0:00:37.61,0:00:40.40,Default,,0000,0000,0000,,all of the angles\Nare 90 degrees. Dialogue: 0,0:00:40.40,0:00:42.45,Default,,0000,0000,0000,,So here, all we can say\Nis that a parallelogram Dialogue: 0,0:00:42.45,0:00:44.08,Default,,0000,0000,0000,,is a quadrilateral. Dialogue: 0,0:00:44.08,0:00:45.33,Default,,0000,0000,0000,,And so let's check our answer. Dialogue: 0,0:00:45.33,0:00:47.24,Default,,0000,0000,0000,,And it's always a good\Nidea to look at hints. Dialogue: 0,0:00:47.24,0:00:49.66,Default,,0000,0000,0000,,And so it'll kind of say the\Nsame thing that we just said, Dialogue: 0,0:00:49.66,0:00:51.58,Default,,0000,0000,0000,,but it would say it for\Nthe particular problem Dialogue: 0,0:00:51.58,0:00:53.24,Default,,0000,0000,0000,,that you're actually looking at. Dialogue: 0,0:00:53.24,0:00:55.12,Default,,0000,0000,0000,,Let's do a few more of these. Dialogue: 0,0:00:55.12,0:00:58.20,Default,,0000,0000,0000,,Suzanne is on an expedition\Nto save the universe. Dialogue: 0,0:00:58.20,0:01:01.32,Default,,0000,0000,0000,,Sounds like a reasonable\Nexpedition to go on. Dialogue: 0,0:01:01.32,0:01:03.13,Default,,0000,0000,0000,,For her final challenge,\Nshe has to play Dialogue: 0,0:01:03.13,0:01:05.80,Default,,0000,0000,0000,,a game called Find\Nthe Rhombuses. Dialogue: 0,0:01:05.80,0:01:10.31,Default,,0000,0000,0000,,A wizard tells her that she\Nhas a square, a quadrilateral, Dialogue: 0,0:01:10.31,0:01:12.41,Default,,0000,0000,0000,,and a parallelogram,\Nand she must Dialogue: 0,0:01:12.41,0:01:16.22,Default,,0000,0000,0000,,identify which of the\Nshapes are also rhombuses. Dialogue: 0,0:01:16.22,0:01:20.58,Default,,0000,0000,0000,,Which of these shapes should\Nshe pick to save the universe? Dialogue: 0,0:01:20.58,0:01:23.85,Default,,0000,0000,0000,,So a square is a special\Ncase of a rhombus. Dialogue: 0,0:01:23.85,0:01:28.63,Default,,0000,0000,0000,,Just to remind ourselves, a\Nrhombus, the opposite sides Dialogue: 0,0:01:28.63,0:01:29.75,Default,,0000,0000,0000,,are parallel to each other. Dialogue: 0,0:01:29.75,0:01:32.65,Default,,0000,0000,0000,,You have two sets\Nof parallel sides. Dialogue: 0,0:01:32.65,0:01:35.14,Default,,0000,0000,0000,,A square has two sets\Nof parallel sides, Dialogue: 0,0:01:35.14,0:01:37.65,Default,,0000,0000,0000,,and it has the extra condition\Nthat all of the angles Dialogue: 0,0:01:37.65,0:01:38.90,Default,,0000,0000,0000,,are right angles. Dialogue: 0,0:01:38.90,0:01:43.12,Default,,0000,0000,0000,,So a square is definitely\Ngoing to be a rhombus. Dialogue: 0,0:01:43.12,0:01:46.24,Default,,0000,0000,0000,,Now, all rhombuses\Nhave four sides. Dialogue: 0,0:01:46.24,0:01:48.93,Default,,0000,0000,0000,,So all rhombuses\Nare quadrilaterals. Dialogue: 0,0:01:48.93,0:01:51.83,Default,,0000,0000,0000,,But not all quadrilaterals\Nare rhombuses. Dialogue: 0,0:01:51.83,0:01:54.08,Default,,0000,0000,0000,,You could have a quadrilateral\Nwhere none of the sides Dialogue: 0,0:01:54.08,0:01:55.77,Default,,0000,0000,0000,,are parallel to each other. Dialogue: 0,0:01:55.77,0:01:58.38,Default,,0000,0000,0000,,So we won't click this one. Dialogue: 0,0:01:58.38,0:02:00.60,Default,,0000,0000,0000,,Once again, a parallelogram. Dialogue: 0,0:02:00.60,0:02:03.37,Default,,0000,0000,0000,,So all rhombuses\Nare parallelograms. Dialogue: 0,0:02:03.37,0:02:06.00,Default,,0000,0000,0000,,They have two sets\Nof parallel sides, Dialogue: 0,0:02:06.00,0:02:07.62,Default,,0000,0000,0000,,two sets of parallel\Nline segments Dialogue: 0,0:02:07.62,0:02:09.02,Default,,0000,0000,0000,,representing their sides. Dialogue: 0,0:02:09.02,0:02:12.91,Default,,0000,0000,0000,,But all parallelograms\Nare not rhombuses. Dialogue: 0,0:02:12.91,0:02:14.91,Default,,0000,0000,0000,,So I would say that if\Nsomeone gives you square, Dialogue: 0,0:02:14.91,0:02:18.40,Default,,0000,0000,0000,,you can say, look, a square is\Nalways going to be a rhombus. Dialogue: 0,0:02:18.40,0:02:21.17,Default,,0000,0000,0000,,A quadrilateral isn't always\Ngoing to be a rhombus, Dialogue: 0,0:02:21.17,0:02:25.21,Default,,0000,0000,0000,,nor is a parallelogram\Nalways going to be a rhombus. Dialogue: 0,0:02:25.21,0:02:27.11,Default,,0000,0000,0000,,We got it right. Dialogue: 0,0:02:27.11,0:02:27.61,Default,,0000,0000,0000,,