Constructing Copy of an Angle with Unknown Measurement

Q.

Construct an angle of ${30}^{\circ }$ without using protractor. [2 MARKS]

Q.

Question 3: Draw rough diagrams of two angles such that they have:
(a) Four points in common.

Q.

Draw an angle of $80°$ with the help of a protractor. Then construct angle of $40°$.

Q. Draw an angle of 70 degree. Make a copy of it using only a straight edge and compass.(3 Mark)

Q. Draw an angle of ${40}^{\circ }$ Copy its supplementary angle.

Q.

Question 41

State whether the given statement is True or False.

Two angles can have exactly five points in common.

Q.

Question 3: Draw rough diagrams of two angles such that they have:
(a) Two points in common.

Q. Draw rough diagrams of two angles such that they have one point in common.​

Q.

Construct the following angles and verify by measuring them by a protractor:
${105}^o$

Q. Construct an angle of measure ${22.5}^o$ using compass and ruler.

Q. Draw rough diagrams of two angles such that they have One ray in common.

Q. Draw an angle of ${40}^o$ using protractor. Now with the help of ruler and compass, construct an angle to this angle.

Q. Construct with ruler and compasses, angle of the following measure:
${120}^o$

Q. In order to duplicate a given angle, which of the following instruments can be used?

1. Compass
2. Set Square
3. Protractor
4. Divider

Q. Draw rough diagrams of two angles such that they have One point in common.

Q. Drawn an angle of measure ${30}^o$ and construct its bisector.

Q. Draw an angle of ${70}^o$. Make a copy of it using only a straight edge and compasses.

Q.

In the given figure if $\angle$BAC = ${60}^{\circ }$, AB = AC, then

1. AB=AC

2. AB=BC

3. BC = AC

4. none of the above

Q.

Question 78

Draw an angle of ${65}^{\circ }$ and draw an angle equal to this angle using ruler and compass.

Q. Construct an $\angle ABC={40}^o$. Draw another $\angle PQR$ congruent to the given angle without using a protractor.

Q. Which of the following angles are to be bisected to construct an angle of 105° with the help of compass and ruler?

1. 60° and 120°
2. 75° and 120°
3. 90° and 120°
4. 90° and 180°

Q.

With ruler and compasses, any angle can be bisected

1. True
2. False

Q. Construct with ruler and compasses, angle of the following measure:
${60}^o$

Q. Using your protractor, draw an angle of measure ${108}^{\circ }$.With this angle as given, draw an angle of ${54}^{\circ }$.

Q. Draw $\angle AOB={76}^{\circ }$ with the help of a protractor. Bisect this angle by using a ruler and compass. Measure the two parts by your protractor and see how accurate you are.

Q. Draw the following angles using compasses.
${165}^{\circ }$

Q. Draw a line segment $OA=5cm.$ Use set-square to construct angle $AOB={60}^{\circ },$ such that $OB=3cm.$ Join A and B; then measure the length of AB.

Q. Construct the following angles and verify by measuring them by a protractor.
${75}^o$

Q. Construct an angle of ${90}^0$ at the initial point of a given ray and justify the construction.

Q. Construct $\angle ABC={120}^o$. Through A draw a line parallel to BC.