We have compiled the NCERT MCQ Questions for Class 7 Maths Chapter 6 The Triangles and its Properties with Answers Pdf free download covering the entire syllabus. Practice MCQ Questions for Class 7 Maths with Answers on a daily basis and score well in exams. Refer to the The Triangles and its Properties Class 7 MCQs Questions with Answers here along with a detailed explanation.
The Triangles and its Properties Class 7 MCQs Questions with Answers
Choose the correct option.
Question 1.
How many elements are there in a triangle?
(a) 3
(b) 4
(c) 6
(d) 8
Answer
Answer: (a) 3
Question 2.
If two sides of a triangle are not equal the triangle is called
(a) scalene
(b) isosceles
(c) equilateral
(d) right-angled
Answer
Answer: (a) scalene
Question 3.
If all the three sides of a triangle are equal, the triangle is called
(a) equilateral
(b) right-angled
(c) isosceles
(d) scalene
Answer
Answer: (a) equilateral
Question 4.
If one angle of a triangle is obtuse, the triangle is called
(a) acute-angled
(b) right-angled
(c) scalene
(d) obtuse-angled
Answer
Answer: (d) obtuse-angled
Question 5.
How many medians can a triangle have?
(a) 1
(b) 2
(c) 3
(d) 6
Answer
Answer: (c) 3
Question 6.
In a right triangle, if hypotenuse is H, perpendicular is P and base is B then
(a) B² = H² + P²
(b) H² = P² + B²
(c) H² = P² – B²
(d) P² = B² + H²
Answer
Answer: (b) H² = P² + B²
Question 7.
The measure of each angle of an equilateral triangle is
(a) 30°
(b) 60°
(c) 90°
(d) 45°
Answer
Answer: (b) 60°
Question 8.
Which of the following cannot be the sides of a right triangle?
(a) 2 cm, 2 cm, 4 cm
(b) 5 cm, 12 cm; 13 cm
(c) 6 cm, 8 cm, 10 cm
(d) 3 cm; 4 cm; 5 cm
Answer
Answer: (a) 2 cm, 2 cm, 4 cm
Question 9.
Find the angle x in the given figure.
(a) 40°
(b) 45°
(c) 50°
(d) 60°
Answer
Answer: (c) 50°
Question 10.
In the given figure, find ‘x’
(a) 60°
(b) 70°
(c) 80°
(d) 75°
Answer
Answer: (b) 70°
Question 11.
Least number of possible acute angles in a triangle is:
(a) 0
(b) 1
(c) 2
(d) 3
Answer
Answer: (c) 2
Question 12.
Maximum number of possible obtuse angles in a triangle is:
(a) 0
(b) 1
(c) 2
(d) 3
Answer
Answer: (b) 1
Fill in the blanks
Question 1.
There can be only ……………… obtuse angles in a triangle.
Answer
Answer: one
Question 2.
In the given ∆ABC, ∠x = ………………
Answer
Answer: 45°
Question 3.
In the given ∆PQR, ∠x is ……………….
Answer
Answer: 125°
Question 4.
In a triangle, the sum of the lengths of any two sides can never be …………….. than the length of third side.
Answer
Answer: Smaller
Question 5.
If two sides of a triangle are equal then it is called an ……………….
Answer
Answer: Issoceles Triangle
Question 6.
For a ΔABC, ∠A + ∠B + ∠C = …………………..
Answer
Answer: 180°
Question 7.
The measure of each angle of an equilateral triangle is …………………
Answer
Answer: 60°
Question 8.
In a right triangle, the side opposite to 90° is called ………………. [hypotenuse/base]
Answer
Answer: Hypotenuse
Question 9.
The perpendicular line segment drawn from a vertex of a triangle to the opposite side is called its ………………….. [median/altitude]
Answer
Answer: Altitude
Question 10.
If the measure of each side of a triangle is the same, then the triangle is called an …………………. triangle. [equilateral/isosceles]
Answer
Answer: equilateral
Question 11.
If the two sides of a triangle are equal then it is called an …………………….. triangle. [equilateral/isosceles]
Answer
Answer: isosceles
Question 12.
There can be only …………………… acute angle(s) of a triangle. [three/two]
Answer
Answer: three
Question 13.
There can be only …………………… obtuse angle(s) of a triangle. [one/two]
Answer
Answer: one
Question 14.
40°, 50° and 80° ………………….. be the angles of a triangle. [can/cannot]
Answer
Answer: cannot
Question 15.
30°, 90° and 90° ……………….. be the angles of a triangle. [can/cannot]
Answer
Answer: cannot
Question 16.
5 cm, 3.8 cm and 9.1 cm …………………… be the measures of the sides of a triangle. [can/cannot]
Answer
Answer: cannot
Question 17.
4.9 cm, 3.01 cm and 2.7 cm ……………………… be the measures of the sides of a triangle. [can/cannot]
Answer
Answer: can
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