Advertisements
Advertisements
Question
A triangle can be constructed by taking two of its angles as ______.
Options
110°, 40°
70°, 115°
135°, 45°
90°, 90°
Advertisements
Solution
A triangle can be constructed by taking two of its angles as 110°, 40°.
Explanation:
We know that, the sum of all the angles of a triangle is equal to 180°.
So, sum of any two angles of a triangle should be less than 180°.
110° + 40° = 150° i.e. less than 180°
70° + 115° = 185° i.e. greater than 180°
135° + 45° = 180° i.e. equal to 180°
90° + 90° = 180° i.e. equal to 180°.
APPEARS IN
RELATED QUESTIONS
The following figure have rotational symmetry of order more than 1:
Order of rotation of a circle is infinite
The order of rotational symmetry of 
is _________
Find the alphabets in the box which have Rotational symmetry
| A | M | P | E |
| D | I | K | O |
| N | X | S | H |
| U | V | W | Z |
For the following picture, find the number of lines of symmetry and also find the order of rotation.
For the following picture, find the number of lines of symmetry and also find the order of rotation.
How the following numbers are changed after half turn.
8 8 8 8 8 _______________
1 0 1 0 1 _______________
1 1 1 1 1 _______________
8 0 8 0 8 _______________
Each of the letters H, N, S and Z has a rotational symmetry of order ______.
After rotating a figure by 120° about its centre, the figure coincides with its original position. This will happen again if the figure is rotated at an angle of 240°.
Tell whether the figure has rotational symmetry. Write yes or no.
