1 00:00:00,000 --> 00:00:00,680 2 00:00:00,680 --> 00:00:06,100 For an art project, a pentagon made of construction paper is 3 00:00:06,100 --> 00:00:09,180 cut into five equal slices. 4 00:00:09,180 --> 00:00:11,210 Two of the slices are removed. 5 00:00:11,210 --> 00:00:14,540 Write the remaining portion of the pentagon as a fraction. 6 00:00:14,540 --> 00:00:16,360 So let's draw ourselves a pentagon. 7 00:00:16,360 --> 00:00:20,060 A pentagon is just a five-sided figure, so 8 00:00:20,060 --> 00:00:22,010 it looks like this. 9 00:00:22,010 --> 00:00:24,770 It's also where the Department of Defense is located, a 10 00:00:24,770 --> 00:00:26,450 building that's actually in this shape. 11 00:00:26,450 --> 00:00:28,950 That's why they call it the Pentagon. 12 00:00:28,950 --> 00:00:32,420 Let me draw it a little nicer than that. 13 00:00:32,420 --> 00:00:36,050 It looks something like this. 14 00:00:36,050 --> 00:00:37,400 Eh! 15 00:00:37,400 --> 00:00:39,980 My pentagon drawing skills need some work. 16 00:00:39,980 --> 00:00:43,070 17 00:00:43,070 --> 00:00:43,840 There you go. 18 00:00:43,840 --> 00:00:45,990 That's a pretty decent shot at a pentagon. 19 00:00:45,990 --> 00:00:48,480 So that's the pentagon made out of construction paper. 20 00:00:48,480 --> 00:00:51,140 Notice it has one, two, three, four, five sides. 21 00:00:51,140 --> 00:00:52,310 That's why it's called a pentagon. 22 00:00:52,310 --> 00:00:57,840 And it's cut into five equals slices, so we could do that. 23 00:00:57,840 --> 00:01:00,560 Maybe that's the center of the pentagon. 24 00:01:00,560 --> 00:01:03,270 Here this is one slice right there. 25 00:01:03,270 --> 00:01:08,690 That is two slices, three slices, four slices, and then 26 00:01:08,690 --> 00:01:10,070 a fifth slice, so you can imagine these 27 00:01:10,070 --> 00:01:11,970 are all equal slices. 28 00:01:11,970 --> 00:01:14,736 Now, they're saying two of the slices are removed. 29 00:01:14,736 --> 00:01:18,890 30 00:01:18,890 --> 00:01:21,310 So let's get rid of two of these slices. 31 00:01:21,310 --> 00:01:25,510 Let's say we remove that slice up there. 32 00:01:25,510 --> 00:01:27,750 Let's say we remove the slice right next to 33 00:01:27,750 --> 00:01:29,990 it right over there. 34 00:01:29,990 --> 00:01:33,740 And then they want us to write the remaining portion of the 35 00:01:33,740 --> 00:01:34,990 pentagon as a fraction. 36 00:01:34,990 --> 00:01:39,120 37 00:01:39,120 --> 00:01:41,110 So what are the remaining slices? 38 00:01:41,110 --> 00:01:45,340 Well, I have this slice right there, that slice right over 39 00:01:45,340 --> 00:01:47,390 here and then this slice. 40 00:01:47,390 --> 00:01:54,960 So you have three slices remaining out of a total 41 00:01:54,960 --> 00:01:56,610 possible of how many? 42 00:01:56,610 --> 00:02:00,190 How many slices are in the entire pentagon? 43 00:02:00,190 --> 00:02:05,870 So if you look at the entire pentagon, if you consider all 44 00:02:05,870 --> 00:02:08,630 of the slices, we have five slices. 45 00:02:08,630 --> 00:02:12,120 So if you consider the entire pentagon, it is made up of 46 00:02:12,120 --> 00:02:14,680 five total slices. 47 00:02:14,680 --> 00:02:21,670 So it's three remaining out of five total slices, so you 48 00:02:21,670 --> 00:02:35,590 could say that 3/5 of the pentagon remain. 49 00:02:35,590 --> 00:02:38,170 Or you could say 2/5 were removed. 50 00:02:38,170 --> 00:02:42,070 That's two of the five slices were removed, and then three 51 00:02:42,070 --> 00:02:46,410 are remaining, or 3/5 of the pentagon remain. 52 00:02:46,410 --> 00:02:46,934