Answer:
:
Visualisation: 1 Mark
Finding the angle: 1 Mark
Type of Triangle: 1 Mark
The minute hand covers an angle of 30${}^{\circ }$ in every five minutes. The angle covered in moving from4 to 6 is60${}^{\circ }$.
The lengthof the minute hand remains constant. So the two sides of the triangle will be equal.
So the angles will be same for the sides which are equal.
Now, theangle included between the sides whose length are equal is 60${}^{\circ }$.
So the other angles are (180-60)$÷$2 = 60${}^{\circ }$.
Hence all the angles of the triangle are 60${}^{\circ }$.
$\therefore$ The the triangle formed is an equilateral triangle.