Steps: 2 Marks
Construction: 2 Marks
i) Draw a line segment XY of length 8.4 cm.
ii) Draw a circle, while taking point X as centre and radius more than half of XY.
iii) With same radius and taking the centre as Y, again draw arcs to cut the circle at A and B. Join AB which intersects XY at M.
iv) Taking X and Y as centres. Draw two circles more than half of XM.
v) With same radius and taking M as the centre, draw arcs to intersect these circles at P, Q, R and S.
vi) Join PQ and RS. These are intersecting XY at T and U.
vii) Now XT = TM = MU = UY. These are 4 equal parts of XY.

Each step: 1 Mark
Step 1: Draw a line of length 6 cm. Mark a point P on it.

Step 2: With P as the centre and a convenient radius, construct an arc intersecting the line l at two points A and B.

Step 3: With A and B as centres and a radius 3 cm, construct two arcs, which cut each other at Q.

Step 4: Join PQ. Then PQ is perpendicular to l

Each step: 1 Mark
The steps given below should be followed to construct an angle and its bisector:
i) Draw a line l and mark a point 'O' on it.
ii) Mark a point A ${132}^{\circ }$ to line l with the help of protractor. Join OA.
iii) Draw an arc of convenient radius, while taking point O as the centre. Let it intersect both rays of angle ${132}^{\circ }$ at point A and B.
iv) Taking A and B as centres, draw arcs each of radius more than half of AB so that they intersect each other at C. Join OC.
OC is the required bisector of angle of ${132}^{\circ }$

Each step: 1 Mark
(i) Draw a line segment AB of length 6.8 cm.

(ii) Taking A as the centre, draw a circle by using a compass. The radius of the circle should be more than half of AB. 

(iii) With the same radius as before, draw two arcs using B as the centre such that it cuts the previous circle at C and D.

(iv) Join CD. CD is the axis of symmetry.

Two angles are called supplementary angles when they add up to ${180}^{\circ }$.

Therefore, the supplementary angle of ${45}^{\circ }$ is, ${180}^{\circ }-{45}^{\circ }={135}^{\circ }$

In reality, railroad tracks are almost parallel.

Parallel lines are two lines that are always the same distance apart and never touch. In order for two lines to be parallel, they must be drawn in the same plane, a perfectly flat surface like a wall or sheet of paper, and they must always be at the same distance.

Following all the steps mentioned, we obtain the following

On measuring $\angle QAB$, we would get the measure of the angle equal to ${120}^{\circ }.$

Tracing the line may not give accurate result. Similarly, measuring using a ruler may give wrong results depending upon the angle of viewing. Using a compass and a ruler would be the easiest and most accurate method to copy a given line segment PQ.

There are no corners in a circular floor! The 2 set squares that you have are both right angled triangles. So, one of the angles is ${90}^{\circ }$. When it is $12:15$, the angle included between the hour hand and the minute hand is not ${90}^{\circ }$, it is slightly lesser than that because the hour hand moves in clockwise direction too as the minute hand moves.