A quadrilateral having four equal sides is called a Rhombus, and if each angle is a right angle then it is called a Square.
The vertex of an angle lies on the angle.
Unlimited number of lines can be drawn.
A regular polygon has all sides and angles of equal measures. Only an equilateral triangle is a regular polygon.
In $\angle ROP,$ vertex is $O$ because is vertex is mentioned in middle.
A set of points equidistant from a fixed point in a plane figure is called a circle where the distance between each of the set of the points and the fixed point forms the radius of the circle.
An open curve is a curve whose end points do not join. In other words it has $2$ end points.
Let's take two points $P$ and $Q.$
Now, $P$ and $Q$ can be joined by only one straight line as shown in above figure.
So, they determine only one line segment.
An isosceles triangle is a triangle that has two equal sides.
As the line segment has two end points, so it is an open curve.
As the length of the edge of an $A4$ sheet is fixed, so it is an example of a LINE SEGMENT.
Neither of road and railway track have a definite end point. Only ruler has a certain end point.
$3x + 2ky = 2$ and $2x + 5y + 1 = 0$ are parallel
$\therefore$ The coefficients of $x$ and $y$ are in proportion
$\Rightarrow\frac{3}{2}=\frac{2\text{k}}{5}$
$\Rightarrow\text{k}=\frac{15}{4}$
A reflex angle is defined as an angle that measures more than $180^\circ $ but less than $360^\circ .$
The diagonals of a rhombus bisect each other at right angle.