<ul><li>In Figure 1, ABCD is a rectangular piece of paper of length 24cm. After 12 identical isosceles triangles are cut o...
<ul><li>In Figure 1, ABCD is a rectangular piece of paper of length 24cm. After 12 identical isosceles triangles are cut o...
<ul><li>In Figure 1, ABCD is a rectangular piece of paper of length 24cm. After 12 identical isosceles triangles are cut o...
<ul><li>In Figure 1, ABCD is a rectangular piece of paper of length 24cm. After 12 identical isosceles triangles are cut o...
<ul><li>In Figure 1, ABCD is a rectangular piece of paper of length 24cm. After 12 identical isosceles triangles are cut o...
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Q8

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Q8

  1. 1. <ul><li>In Figure 1, ABCD is a rectangular piece of paper of length 24cm. After 12 identical isosceles triangles are cut out from the paper, the remaining paper is shown in Figure 2. The perimeter of Figure 2 is 120 cm more than the perimeter of Figure 1. What is the perimeter of one isosceles triangles that were cut out? </li></ul>© mathsheuristics  24 ÷ 6 = 4 1
  2. 2. <ul><li>In Figure 1, ABCD is a rectangular piece of paper of length 24cm. After 12 identical isosceles triangles are cut out from the paper, the remaining paper is shown in Figure 2. The perimeter of Figure 2 is 120 cm more than the perimeter of Figure 1. What is the perimeter of one isosceles triangles that were cut out? </li></ul>© mathsheuristics  24 ÷ 6 = 4 Length of one isosecles triangle = 1 unit 1 2
  3. 3. <ul><li>In Figure 1, ABCD is a rectangular piece of paper of length 24cm. After 12 identical isosceles triangles are cut out from the paper, the remaining paper is shown in Figure 2. The perimeter of Figure 2 is 120 cm more than the perimeter of Figure 1. What is the perimeter of one isosceles triangles that were cut out? </li></ul>© mathsheuristics  24 ÷ 6 = 4 Length of one isosceles triangle = 1 unit 24u = 48 + 120 1 2 3
  4. 4. <ul><li>In Figure 1, ABCD is a rectangular piece of paper of length 24cm. After 12 identical isosceles triangles are cut out from the paper, the remaining paper is shown in Figure 2. The perimeter of Figure 2 is 120 cm more than the perimeter of Figure 1. What is the perimeter of one isosceles triangles that were cut out? </li></ul>© mathsheuristics  24 ÷ 6 = 4 Length of one isosceles triangle = 1 unit 24u = 48 + 120 1 u = 168 ÷ 24 = 7 1 2 3
  5. 5. <ul><li>In Figure 1, ABCD is a rectangular piece of paper of length 24cm. After 12 identical isosceles triangles are cut out from the paper, the remaining paper is shown in Figure 2. The perimeter of Figure 2 is 120 cm more than the perimeter of Figure 1. What is the perimeter of one isosceles triangles that were cut out? </li></ul>© mathsheuristics  24 ÷ 6 = 4 Length of one isosceles triangle = 1 unit 24u = 48 + 120 1 u = 168 ÷ 24 = 7 7+ 7 + 4 = 18 Ans 18cm 1 2 3

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