삼각형·사각형과 대칭 단원 종합

U.1A square marks a 90° angle.

1. 1
   Acute, right, or obtuse? 
2. 2
   Acute, right, or obtuse? 
3. 3
   Acute, right, or obtuse? 
4. 4
   Acute, right, or obtuse? 

U.2Write equilateral, isosceles, or scalene.

1. 5
   Equilateral, isosceles, or scalene? 
2. 6
   Equilateral, isosceles, or scalene? 

U.2Write equilateral, isosceles, or scalene. (continued)

1. 7
   Equilateral, isosceles, or scalene? 
2. 8
   Equilateral, isosceles, or scalene? 

U.3Ticks: equal sides. Arrows: parallel sides. Squares: right angles. Names: square, rectangle, rhombus, parallelogram, trapezoid, quadrilateral.

1. 9
   Name: 
2. 10
   Name: 
3. 11
   Name: 
4. 12
   Name: 

U.4A line of symmetry folds a shape onto itself, so the two halves match exactly.

1. 13
   Lines of symmetry: 
2. 14
   Lines of symmetry: 

U.4A line of symmetry folds a shape onto itself, so the two halves match exactly. (continued)

1. 15
   Lines of symmetry: 
2. 16
   Lines of symmetry: 

U.1Acute, Right & Obtuse Triangles

1. 1obtuse
2. 2right
3. 3acute
4. 4acute

U.2Equilateral, Isosceles & Scalene Triangles

1. 5scalene
2. 6isosceles
3. 7scalene
4. 8isosceles

U.3Classify Quadrilaterals

1. 9quadrilateral
2. 10parallelogram
3. 11rectangle
4. 12square

U.4Lines of Symmetry

1. 133
2. 140
3. 151
4. 162