In the construction of a 90∘ angle, we make use of the fact that all the sides of an equilateral triangle are equal. True or False?
In the construction of a 90∘ angle, we make use of the fact that all the sides of an equilateral triangle are equal. True or False?
The correct option is B False
As shown in the figure, a 60∘ angle can be made by first drawing a line segment, cutting an arc centred at one end of the segment. Then a second arc centred at the point where the previous arc intersects the line segment can be drawn, cutting the previous arc at a point. Then joining the end point of the segment and the point of intersection of two arcs will give a 60∘ angle. The triangle ABP here is an equilateral triangle. So we can see that the concept behind an equilateral triangle can be used in constructing only 60∘ angle but not a 90∘angle. 90∘ is constructed by using property of perpendicular bisector .
False
As shown in the figure, a 60∘ angle can be made by first drawing a line segment, cutting an arc centred at one end of the segment. Then a second arc centred at the point where the previous arc intersects the line segment can be drawn, cutting the previous arc at a point. Then joining the end point of the segment and the point of intersection of two arcs will give a 60∘ angle. The triangle ABP here is an equilateral triangle. So we can see that the concept behind an equilateral triangle can be used in constructing only 60∘ angle but not a 90∘angle. 90∘ is constructed by using property of perpendicular bisector .
