Draw an angle /_AOB=100^@ . With the same vertex O, draw /_BOC=80^@ such that bar(OB) is common to two anglen.

Two adjacent angles are 40 and 140. Do they form a linear pair? Draw a picture and check. Reau drew the picture like this.she has drawn correctly? Do these adjacent angles form a linear pair?

Draw two lines on a paper as shown below. Do they intersect each other? Can you call them parallel lines? Give reason. Make a pair of parallel lines what is the angle formed between them ? Think, discuss with your friends and teacher.

Two adjacent angles are 40degrees and 140degrees.Do they form a linear pair? Draw a picture and check. Renu draw the pictures like this. Has she drawn correctly? Do these adjacent angles form a linear pair?

Particle P and Q of mass 20 g and 40 g respectively are simultaeously projected from points A and B on the ground. The initial velocities of Pand Q make 45^(@) and 135^(@) angles respectively with the horizontal AB as shown in the fig. Each particle has an initial speed of 49m/s. The separation AB is 245 m. Both particles travel in the same verical plane and undergo a collision. After collision P retraces its path. Determine the position of Q when it hits ground. How much time after the collision does the particle Q take to reach the ground? (Take g=9.8m//s^(2) )

Draw /_\ABC and form an exterior angleACD Now take a protractor and measure angleACD, angle A and angle B . Find the sum angleA+ angleB and compare it with the measure angleACD .Do you observe that angleACD is equal (or nearly equal) to angleA+ angleB

A particle A is projected with an initial velocity of 60 m/s at an angle 30^(@) to the horizontal. At the same time a second particle B is projected in opposite direction with initial speed of 50 m/s from a A point at a distance of 100 m from A. If the particles collide in air, find (a) the angle of projection of particle B (b) timewhen the collisions takes place and (c) the distance of P from A. where collision occurs. (g=10 m//s^(2))

A particle A is projected with an initial velocity of 60 m/s at an angle 30^(@) to the horizontal. At the same time a second particle B is projected in opposite direction with intial speed of 50 m/s from a point at a distance of 100 m from A. if the particles collide in air, find a the angle of projection alpha of particle B (b) time when the collisions takes place and c the distance of P from A. where collision occurs (g=10m//s^(2))

Three rods of identical cross - sectional area and made from the same metal form the sides of an isosceles triangle ABC right angled at B. The points A and B are maintained at temperatures T and sqrt2T respectively in steady state. Assuming that only heat conduction takes place find the temperature at point C.