A triangle can be rotated through any angle of your choice!
An equilateral triangle has rotational symmetry of order 3, which means that a rotation of 120 degrees (or multiples) will bring it back to the same orientation. All other triangles have rotational symmetry of order 1: that is, you have to rotate them a full circle (360 deg) before they look the same.
The angle of rotation for a point on a circle to draw an equilateral triangle is 120 degrees, as the triangle's three equal angles divide the circle into three equal 120° arcs.
60 degrees, 120 degrees
The angle of rotation for a regular polygon with 7 sides isImmersive Reader
If one angle is a right angle, it is a right triangle. If one angle is an obtuse angle, it is an obtuse triangle. If there are no right nor obtuse angle then it is an acute triangle.
A triangle with 1 right angle is a right angle triangle.
No.
60 degrees, 120 degrees
The angle of rotation for a point on a circle to draw an equilateral triangle is 120 degrees, as the triangle's three equal angles divide the circle into three equal 120° arcs.
40
The angle of rotation for a regular polygon with 7 sides isImmersive Reader
Yes. That is why it is called a right angle triangle!Yes. That is why it is called a right angle triangle!Yes. That is why it is called a right angle triangle!Yes. That is why it is called a right angle triangle!
A right angle triangle
A right angle triangle.
Rotation preserves shape - therefore the angle before the rotation equals the angle after the rotation.
ABC angle is an angle,not a triangle!
If one angle is a right angle, it is a right triangle. If one angle is an obtuse angle, it is an obtuse triangle. If there are no right nor obtuse angle then it is an acute triangle.
The centre of rotation, the angle of rotation and, unless the angle is 180 degrees, the direction of rotation.