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प्रश्न
Construct an isosceles right-angled triangle, having hypotenuse= 8 cm. Draw its lines of symmetry.
उत्तर
Steps of construction:
(i) Draw a line segment BC= 8 cm
(ii) Draw its perpendicular bisector whidi intersects BC at D. With Das centre and BD or CD as radius, draw a semi-circle.
(iii) Produce the perpendicular bi sector of BC which intersects the ci rel e at A.
(iv) Join AB and AC. Triangle ABC is the required isosceles right-angled triangle.
The perpendicular bisector of hypotenuse BC is the line of symmetry.
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संबंधित प्रश्न
Use graph paper for this question) (4)
A(0, 3), B(3, −2) and O(0, 0) are the vertices of triangle ABO.
(1) Plot the triangle on a graph sheet taking 2 cm = 1 unit on both the axes.1
(2) Plot D the reflection of B in the Y-axis, and write its coordinates.
(3) Give the geometrical name of the figure ABOD.
(4) Write the equation of the line of symmetry of the figure ABOD.
Complete the following figure, about the given lines of symmetry which are shown by dotted lines and name the figure thus obtained:
Complete the following figure, about the given lines of symmetry which are shown by dotted lines and name the figure thus obtained:
Draw a diagram and name the figure in the following:
A quadrilateral having only one line of symmetry.
Part of a geometrical figure is given in each of the diagrams below. Complete the figures so. that the line AB in each case is a line of symmetry of the completed figure.
Give also the geometrical name for the completed figure. Recognizable free hand Sketches would be awarded full marks.
Draw and answer the following.
A triangle which has no line of symmetry
Draw and answer the following.
A triangle which has only one line of symmetry
Find the alphabets in the box which have No line of symmetry
| A | M | P | E |
| D | I | K | O |
| N | X | S | H |
| U | V | W | Z |
The number of lines of symmetry in a 30° – 60° – 90° set square is ______.
A regular octagon has 10 lines of symmetry.
