CBSE Questions for Class 7 Maths The Triangle And Its Properties Quiz 2 - MCQExams.com

A triangle with the sides measuring $$4$$ cm, $$5$$ cm and $$5$$ cm is called
  • an equilateral triangle
  • an isosceles triangle
  • a scalene triangle
  • none of the above
A triangle with one right angle and two acute angles is called
  • right angled triangle
  • acute angled triangle
  • equilateral triangle
  • none of these
A triangle can have :
  • one right angle
  • two right angles
  • three obtuse angles
  • none of these
A triangle with the sides measuring $$5$$ cm, $$6$$ cm and $$4$$ cm is called:
  • an equilateral triangle
  • an isosceles triangle
  • a scalene triangle
  • none of the above
In a right angled triangle, the other two angles are:
  • acute
  • obtuse
  • right
  • none of these
The length of the hypotenuse of a right-angle triangle whose measure of two sides are 12 cm and 
0.35 m is:
  • 37 cm
  • 3.72 cm
  • 0.372 cm
  • 37 m
A triangle with one obtuse and two acute angles is called
  • right angled triangle
  • acute angled triangle
  • obtuse angled triangle
  • none
The triangle formed by $$BC=8.2 cm$$, $$AC=7 cm$$ and $$ \displaystyle \angle C = 120^{\circ} $$ is-

  • An obtuse angled triangle
  • An acute angle triangle
  • A right angled triangle
  • None of these
Sum of the lengths of any two sides of a triangle is always ____ than the length of the third side.
  • less than
  • equal to
  • greater than
  • None of these
If two angles in a triangle are 75$$\displaystyle ^{\circ}$$ and 95$$\displaystyle ^{\circ}$$ then the third angle is__
  • 30$$\displaystyle ^{\circ}$$
  • 20$$\displaystyle ^{\circ}$$
  • 10$$\displaystyle ^{\circ}$$
  • 40$$\displaystyle ^{\circ}$$
A quadrilateral is having _____.
  • one diagonal
  • two diagonals
  • three diagonals
  • four diagonals
The interior of a triangle is
  • the intersection of three lines
  • the union of three line segments
  • the set of the intersection of interiors of the angles of triangle
  • none of these
Can the three sides of length $$6 cm, 5 cm,$$ and $$3 cm$$ form a triangle?
  • Yes
  • No
  • Sometimes
  • None
If one angle of a triangle is equal to half the sum of the other two equal angles, then the triangle is 
  • Isosceles
  • Scalene
  • Equilateral
  • Right-angled
In a $$\displaystyle \Delta ABC$$, if $$\displaystyle AC^{2} = AB^{2} + BC^{2}$$ then the right angle is at__
  • C
  • B
  • A
  • None of these
All equilateral triangles have ___ sides and ____ angles equal. 
  • two, two
  • three, three
  • three , two
  • two, three
We use ........... formula to find the lengths of the right angled triangles.
  • Pythagoras theorem
  • Postulate theorem
  • Thales theorem
  • None of the above
Angles opposite to ____ sides of an isosceles triangles are equal.
  • equal
  • unequal
  • any two
  • none of these
In Pythagoras theorem in right angled triangle the longest side is called the
  • Hypotenuse
  • Height
  • Perpendicular
  • Bisector
A triangle whose........... angle(s) is $$\displaystyle { 90 }^{ o }$$ is called a right angled triangle.
  • $$0$$
  • $$3$$
  • $$2$$
  • $$1$$
In Pythagoras theorem  the right angled triangle is also called a
  • Acute angled triangle
  • Scalene angled triangle
  • Reflex angled triangle
  • Straight angled triangle
For given figure, the formula for Pythagoras theorem is:
448332.PNG
  • $$\displaystyle { a }^{ 2 }-{ b }^{ 2 }={ c }^{ 2 }$$
  • $$\displaystyle { c }^{ 2 }+{ b }^{ 2 }={ a }^{ 2 }$$
  • $$\displaystyle { a }^{ 2 }+{ b }^{ 2 }={ c }^{ 2 }$$
  • $$\displaystyle { a }^{ 2 }+{ c }^{ 2 }={ b }^{ 2 }$$
If all the angles of a triangle measure less than $$\displaystyle { 90 }^{ o }$$, then such a triangle is called ........
  • Right angled triangle
  • Obtuse angled triangle
  • Acute angled triangle
  • None of these
How do you know the triangle is right angled?
  • The triangle is right angled when the three sides of a triangle make $$\displaystyle { a }^{ 2 }+{ b }^{ 2 }={ c }^{ 2 }$$
  • The triangle is right angled when the three sides of a triangle do not make $$\displaystyle { a }^{ 2 }+{ b }^{ 2 }={ c }^{ 2 }$$
  • The triangle is not right angled when the three sides of a triangle make $$\displaystyle { a }^{ 2 }+{ b }^{ 2 }={ c }^{ 2 }$$
  • The three sides of a triangle are all same.
__________ triangle has two sides of equal length.
  • Equilateral
  • Scalene
  • Isosceles
  • Acute
A ______ triangle has no congruent sides.
  • isosceles
  • equilateral
  • acute
  • scalene
A ______ triangle has no equal angles.
  • isosceles
  • equilateral
  • acute
  • scalene
Which angle of a triangle is a right angle? 
448375.PNG
  • Angle C
  • Angle A
  • Angle B
  • None of the above
Identify the scalene triangle.
What is the length of $$BC$$ in an equilateral triangle?

458391_551ea747947c413e8e02fa121c0498b6.png
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  • 3
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