Page 184 - NUMINO TB_3A
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3˙—‡ -A˙ · 2–‡ 2011.3.22 9:31 PM ˘ ` 173 PDF_In 2540DPI 100LPI T
2 . Sample Answers NUMINO
3 . The triangle is an isosceles triangle because
when the paper is folded in half, the 2 sides are
cut together. This makes the 2 sides equal.
4 . Sample Answers
3 . Sample Answers
Activity 2 P. 74~75
1.
2.
Unit 08. Kingdom of Triangles 3 . The triangle is an equilateral triangle because it
P. 70~71 is formed by bringing together 3 of the
The triangles drawn above all have 2 sides that 4 sides of the square. Since a square has
are the same length. 4 equal sides, when 3 of them are brought
All the triangles drawn above have 3 sides that are together, the triangle formed has 3 equal sides.
the same length.
Also, the measures of the 3 angles are all 60 . Activity 3 P. 76~77
1 . a. isosceles
Activity 1 P. 72~73 b . equilateral
1. c . scalene d . isosceles
e . scalene f . equilateral
2. 2 . a. isosceles triangle b . scalene triangle
c . equilateral triangle d . isosceles triangle
3. a. 9 b. 8
c. 3 d . 6, 6
e. 7 f . 7, 7
Answers 173
2 . Sample Answers NUMINO
3 . The triangle is an isosceles triangle because
when the paper is folded in half, the 2 sides are
cut together. This makes the 2 sides equal.
4 . Sample Answers
3 . Sample Answers
Activity 2 P. 74~75
1.
2.
Unit 08. Kingdom of Triangles 3 . The triangle is an equilateral triangle because it
P. 70~71 is formed by bringing together 3 of the
The triangles drawn above all have 2 sides that 4 sides of the square. Since a square has
are the same length. 4 equal sides, when 3 of them are brought
All the triangles drawn above have 3 sides that are together, the triangle formed has 3 equal sides.
the same length.
Also, the measures of the 3 angles are all 60 . Activity 3 P. 76~77
1 . a. isosceles
Activity 1 P. 72~73 b . equilateral
1. c . scalene d . isosceles
e . scalene f . equilateral
2. 2 . a. isosceles triangle b . scalene triangle
c . equilateral triangle d . isosceles triangle
3. a. 9 b. 8
c. 3 d . 6, 6
e. 7 f . 7, 7
Answers 173
