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1
To construct an angle of 600 as shown in the figure the very first step is :
Join OR and extend it to B
With O as the centre and a suitable radius draw an arc intersecting OA at P
Draw a ray OA
All of these
2
Which Geometrical instrument is used to mark off equal lengths but not to measure them and draw arcs and circles?
Compasses
Protactor
Divider
Set Squares
3
What type of angle is 30 degree?
Acute Angle
Right Angle
Obtuse Angle
All of the Above
4
Angle bisector of given angle can be constructed accurately using ________________.
Pair of compasses
Ruler
Set of Squares
5
Two lines are perpendicular if they intersect each other at ____________
Obsute Angle
Both A and B
None of these
6
A 900 angle is exactly half of a ________
Right angle
Obtuse angle
Straight angle
Acute angle
7
The measure of an acute angle is________
< 90
> 90°
= 90°
All of the above
8
To construct an angle of 300 , we construct the angle bisector of _____________
150
600
900
1200
9
A 900 angle lies exactly between______ and ________ degree angles.
1200 and 1800
450 and 600
1200 and 600
None of the above
10
To construct an angle of 900 as shown below. Which of the statement below is incorrect
Draw a ray OA.
Draw OT and produce it to B.
With O as centre and any convenient radius, draw an arc, cutting OA at P.
11
Which of the following step is Incorrect to construct an angle of as shown in the figure below:
Draw a ray OA with initial point O
Draw the ray OB passing through R
Taking O as centre and some radius , draw an arc , which intersects OA at point P
None of the above is incorrect
12
How many arcs are drawn to construct an angle of 900 ?
13
Arrange the following Steps in a Correct manner:
1. Place the pointer of compasses on O.
2. Mark a point 'O' with a pencil where we want the centre of the circle.
3. Turn the compass slowly to draw the circle.
4. Open the compasses for the required radius of 3.2 cm.
2,4,3,1
1,4,2,3
2,4,1,3
4,3,1,2
14
Arrange the steps in correct order to make the construction in the diagram:-
1.Draw a ray OA.
2. With P as centre and the same radius, draw an arc cutting the arc drawn in step II at R..
3. With O as centre and any convenient radius, draw an arc, cutting OA at P.
4. With S as centre and the same radius,draw an arc, cutting the arc drawn in step V at T
5. Draw OT and produce it to B.
6. With R as centre and the same radius as in steps II and III, draw an arc, cutting the arc drawn in step III at S.
7. With R as centre and the same radius, draw an arc
1,3,2,7,6,4,5
1,3,2,6,7,4,5
1,2,3,6,7,4,5
1,3,2,6,7,5,4
15
Arrange the following steps in a sequence manner to construct an angle of :
Step 1. Take P as a center and with the radius of the same length mark an arc on the former arc at a point R.
Step 2. On a plane, sheet draw a line segment OA.
Step 3. Join points O to R and produce up to point B.
Step 4. Take O as a center, draw an arc with proper radius.
1,2,3,4
4,2,1,3
1,4,3,2