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Practical Geometry | Exercise 14.2

Question 3

Construct of AB length 7.8 cm. From this, cut off AC of length 4.7 cm. Measure BC .

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  • Solution

  • Transcript

Step 1: Draw a line l and mark a point A on it.

Step 2: By adjusting the compasses up to 7.8 cm, while putting the pointer of compasses on point

A draw an arc to cut l on B

AB is the line segment of 7.8 cm

Step 3: By adjusting the compasses up to 4.7 cm, draw an arc to cut l on C, while putting the

pointer of compasses on point A.

AC is the line segment of of 4.7 cm

Step 4: Now, place the ruler in such a way that 0 mark of the ruler will match with the point C.

Now read the position of point B. It will be 3.1 cm.

BC is 3.1 cm

"hi guys welcome to leto q a video i am vinit your leader tutor bringing you this question on your screen construct a b of length 7.8 centimeter from this cut off ac of length 4.7 centimeter and measure bc for this we are going to need a ruler and a compass okay so so step one draw array l and mark point a on it okay so this is the rail and we are going to take point a on it now step two will be with length 7.8 centimeter open the compass right then place the pointer at a and cut point b on the line l so now okay the compass has to be placed on the pointer of the compass to take the length has to be placed on 0 we all know that on the ruler and we are going to take the length 7.8 centimeter place it at a and cut an arc yeah so this is the arc we have got so this will be point b now step three will be repeat step 2 width length 4.7 centimeter on the compass it's that easy guys right so let us take the compass and our length on the compass is this time not 7.8 but 4.7 right place it here this will be point c isn't this easy guys if you still have a doubt please leave a comment below do like the video and subscribe to our channel i'll see you in our next video until then bye guys okay the measure of b again we will do it with the ruler measure of bc is 3 centimeter or rather 3.1 centimeter yeah so three point one centimeter so this is three point one centimeter so i'll see you in our next video until then bye guys keep learning keep flourishing"

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Question 3

Construct of AB length 7.8 cm. From this, cut off AC of length 4.7 cm. Measure BC .

  • Solution

  • Transcript

Step 1: Draw a line l and mark a point A on it.

Step 2: By adjusting the compasses up to 7.8 cm, while putting the pointer of compasses on point

A draw an arc to cut l on B

AB is the line segment of 7.8 cm

Step 3: By adjusting the compasses up to 4.7 cm, draw an arc to cut l on C, while putting the

pointer of compasses on point A.

AC is the line segment of of 4.7 cm

Step 4: Now, place the ruler in such a way that 0 mark of the ruler will match with the point C.

Now read the position of point B. It will be 3.1 cm.

BC is 3.1 cm

"hi guys welcome to leto q a video i am vinit your leader tutor bringing you this question on your screen construct a b of length 7.8 centimeter from this cut off ac of length 4.7 centimeter and measure bc for this we are going to need a ruler and a compass okay so so step one draw array l and mark point a on it okay so this is the rail and we are going to take point a on it now step two will be with length 7.8 centimeter open the compass right then place the pointer at a and cut point b on the line l so now okay the compass has to be placed on the pointer of the compass to take the length has to be placed on 0 we all know that on the ruler and we are going to take the length 7.8 centimeter place it at a and cut an arc yeah so this is the arc we have got so this will be point b now step three will be repeat step 2 width length 4.7 centimeter on the compass it's that easy guys right so let us take the compass and our length on the compass is this time not 7.8 but 4.7 right place it here this will be point c isn't this easy guys if you still have a doubt please leave a comment below do like the video and subscribe to our channel i'll see you in our next video until then bye guys okay the measure of b again we will do it with the ruler measure of bc is 3 centimeter or rather 3.1 centimeter yeah so three point one centimeter so this is three point one centimeter so i'll see you in our next video until then bye guys keep learning keep flourishing"

Our top 5% students will be awarded a special scholarship to Lido.

subject-cta
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