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(1) the bisector of an angle of an equilateral triangle is its axis of symmetry. (2) a triangle with an internal angle of 60 ° is an axisymmetric figure The following statements: (1) the bisector of an angle of an equilateral triangle is its axis of symmetry. (2) a triangle with an internal angle of 60 ° is an axisymmetric figure. (3) an isosceles right triangle is an axisymmetric figure. (4) the figure formed by the intersection of two straight lines is not an axisymmetric figure
(1) No, it should be said that the straight line on which the bisector of an angle of an equilateral triangle lies is its axis of symmetry, because the axis of symmetry is a straight line. (2) no, a triangle with an internal angle of 60 ° may be any triangle, which is not an axisymmetric figure at all. (3) correct, the straight line on which the height of the hypotenuse lies is its axis of symmetry
RELATED INFORMATIONS
- 1. In the following description, the non axisymmetric figures are a, a triangle B with two equal internal angles, a right triangle C with an internal angle of 45 degrees and an internal angle of 60 degrees
- 2. If a triangle is axisymmetric and has an internal angle of 60 degrees, So this triangle is a triangle, and this figure has a symmetry axis
- 3. If a triangle is an axisymmetric figure and has an angle of 60 degrees, then the triangle has______ There is an axis of symmetry
- 4. Please use 1 isosceles triangle, 2 rectangles and 3 circles to design an axisymmetric figure in the box below, and use concise words to explain your idea
- 5. Among the isosceles triangle, right triangle, rectangle, square, trapezoid, circle and sector, how many must be axisymmetric?
- 6. Using "two circles, two isosceles triangles and two line segments" to design an axisymmetric figure, and explaining the name of this figure with concise words
- 7. A triangle is an axisymmetric figure. This triangle must be: 1. Acute angle 2. Obtuse angle 3. Right angle 4. Isosceles
- 8. Axisymmetric figure of triangle
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- 10. Is a triangle an axisymmetric figure?
- 11. Two circles, two triangles and two parallel lines form what graph
- 12. Two identical circles, two identical triangles and two parallel lines form a figure which is both axisymmetric and centrosymmetric
- 13. How to use two circles, two triangles and two parallel lines to form a centrosymmetric figure (picture)
- 14. What figure can two circles, two triangles and two line segments form
- 15. There are six points on a circle. How many line segments can be drawn? How many triangles can be formed? There should be formulas,
- 16. How to make some interesting patterns with two circles, two triangles and two line segments?
- 17. What can two parallel lines form a semicircle and a triangle?
- 18. What can a triangle, two parallel lines and a semicircle form
- 19. A triangle, two parallel lines, a semicircle, as a component, as much as possible the concept of unique and meaningful graphics
- 20. Please use a triangle, two parallel lines, and a semicircle Use the above graphics as components, try to conceive meaningful graphics, and add one or two appropriate, humorous commentary