Free Lines, Angles and Triangles 02 Practice Test - 5th Grade 

Question 1

____ has a starting and an ending point.
 

A.

A line

B.

A ray

C.

A line segment

D.

A point

SOLUTION

Solution : C

Line segments are lines that are defined with a fixed length between 2 points.

Question 2

 A point has ____  dimension(s).
 

A.

One

B.

Two

C.

Three

D.

No

SOLUTION

Solution : D

 A point has zero dimensions. There's no length, height and width associated with it.
 

Question 3

 How many degrees does a minute hand of a clock turn through in one hour?
 

A.

90

B.

180

C.

270

D.

360

SOLUTION

Solution : D

A minute hand of a clock makes a complete revolution in one hour. That is, it turns 360 in one hour.
 

Question 4

Which of the following statements best describes two parallel lines
 

A.

They meet exactly at one point.

B.

Lines having a uniform distance between them and never meet each other.

C.

They meet exactly at 2 points.

D.

They form a right angle.

SOLUTION

Solution : B

Parallel lines are lines having a uniform distance between them (equidistant) and this distance is constant throughout and never meet each other.

Question 5

Which of the following angles is not less than a straight angle?

A.

Acute angle

B.

Obtuse angle

C.

Right angle

D.

Reflex angle

SOLUTION

Solution : D

A Straight angle = 180
An Acute angle is less than 90
An obtuse angle is more than 90but less than 180
A Right angle = 90
Reflex angle is the only angle which is greater than 180 and less than 360

Question 6

 A triangle with one obtuse angle is called a/an: 

A.

Isosceles triangle

B.

Acute angled triangle

C.

Obtuse angled triangle

D.

Right angled triangle

SOLUTION

Solution : C

A triangle having one of its angles as an obtuse angle is called an Obtuse angled triangle.
In the given triangle,ABC is an obtuse angle.

Question 7

How many different angles (less than or equal to 90) can you find in the given figure?

A. 3
B. 4
C. 6
D. 5

SOLUTION

Solution : C

The angles formed are DOC,COB,BOA,DOB,COA,DOA
SO, a total of 6 angles are formed.

Question 8

Which of the folloiwng sets of angles can form a triangle?
 

A.

90,30,90

B.

70,70,70

C.

30,20,110

D.

80,40,60

SOLUTION

Solution : D

We know that " Sum of interior angles of a triangle = 180
80+40+60=180.
The sum of angles in all the other sets is more than 180 
80,40,60 is the correct option.
 

Question 9

 How many obtuse angles can a triangle have?
 

A.

One

B.

Two

C.

Three

D.

None

SOLUTION

Solution : A

Sum of interior angles in a tringle = 180.
An obtuse angle measures more than 90 degrees but less than 180 degrees.
A triangle can have only one obtuse angle because if there were two obtuse angles, then the sum of two obtuse angles would always be greater than 180.
Hence, a triangle can have only one obtuse angle.

Question 10

Which of the following is true for the angles shown below?

A. a>b
B. a<b
C. a=b
D. a+b=90

SOLUTION

Solution : A

The larger is the angle, the more is the steepness of the slope.
In the given figures, the triangle with angle a has a steeper slope as compared to the triangle with angle b.

Hence, angle a is greater than angle b.
a>b