A triangle whose two sides measure 4 cm and 400 cm is not possible.
True
False
The sum of two sides of a triangle is less than the third side.
True
False
If one side of a triangle is 8 cm, then the sum of the other two sides must be greater than 8 cm.
True
False
The median of a triangle always lies inside the triangle.
True
False
The point of intersection of altitudes may lie outside the triangle.
True
False
We can draw a triangle whose sides are 5 cm, 12 cm and 18 cm.
True
False
Click the correct answer.
What is the name given to a triangle whose angles measure 40°, 40° and 100°?
Scalene
Right
Isosceles
Equilateral
In a scalene triangle, if from the same vertex a median and an altitude is drawn to the opposite side, then what is the relation between median and altitude?
Median < Altitude
Median > Altitude
Median = Altitude
2 × Median = Altitude
Which is true about the sum of any two sides of a triangle?
It is less than the third side
It is equal to the third side
It is greater than the third side
Insufficient data is given
The two legs of a right-angled triangle measure 12 cm and 35 cm. What is the measure of its hypotenuse?
100 cm
37 cm
10 cm
27 cm
Which of the following is a Pythagorean triplet?
2, 3, 5
4, 5, 7
3, 4, 5
5, 6, 7
What is the formula for the area of a square having diagonal l?
l2
l2 ÷ 2
2l2
l÷ 2
How many different triangles can be formed using 3 strips of definite length?
0
1
2
3
What is the value of x in the given figure?
30°
45°
65°
55°
What is the value of x in the given figure?
40°
55°
50°
60°
What are the values of x and y in the given figure?
x = 30° and y = 110°
x = 60° and y = 90°
x = 90° and y = 60°
x = 50° and y = 100°
Click the correct answer.
A triangle has
elements.
two
four
six
In a triangle, the line joining the vertex to the midpoint of the opposite side is known as
.
centroid
median
orthocentre
The perpendicular drawn from the vertex of a triangle to the opposite side is known as
.
altitude
orthocentre
median
The three medians of a triangle meet at a point known as the
.
centroid
altitude
orthocentre
The three altitudes of a triangle are concurrent and their point of intersection is known as
.
centroid
orthocentre
median
In a right-angled triangle, the square of the
is equal to the sum of the squares of the other two sides.
perpendicular
base
hypotenuse
The third side of a triangle whose two sides measure 1 cm and 100 cm is greater than
and less than 101 cm.
90 cm
89 cm
99 cm
Every triangle has at least
.
one acute angle
two acute angles
three acute angles
In an obtuse-angled triangle, one angle is
90°.
greater than
less than
equal to
The
angle of a triangle is equal to the sum of its two interior opposite angles.
