Class 7 The Triangle And Its Properties CBSE Questions & Answers

Class 7 · The Triangle And Its Properties

This is Mathematics Class 7 The Triangle and its Properties CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
One of the angles of a triangle is 120\(^\circ \) and the other two angles are equal. Find the measure of each of the equal angles.
  • A
    30\(^\circ \), 30\(^\circ \)
    Correct
  • B
    40\(^\circ \), 40\(^\circ \)
  • C
    45\(^\circ \), 45\(^\circ \)
  • D
    50\(^\circ \), 50\(^\circ \)
2
The three angles of a triangle are in the ratio 5:4:1. Find all the angles of the triangle.
  • A
    None of these
  • B
    50\(^\circ \), 40\(^\circ \), 10\(^\circ \)
  • C
    90\(^\circ \), 72\(^\circ \), 18\(^\circ \)
    Correct
  • D
    100\(^\circ \), 80\(^\circ \), 20\(^\circ \)
3
Find the value of the unknown x in the below figure.
Question 3 figure 1
  • A
    80\(^\circ \)
  • B
    70\(^\circ \)
    Correct
  • C
    65\(^\circ \)
  • D
    50\(^\circ \)
4
Find the value of x and y in the adjoining figure.
Question 4 figure 1
  • A
    40\(^\circ \), 70\(^\circ \)
  • B
    48\(^\circ \), 52\(^\circ \)
  • C
    50\(^\circ \), 60\(^\circ \)
  • D
    30\(^\circ \), 80\(^\circ \)
    Correct
5
Find the value of x and y in the below figure.
Question 5 figure 1
  • A
    70\(^\circ \), 80\(^\circ \)
  • B
    50\(^\circ \), 120\(^\circ \)
  • C
    60\(^\circ \), 90\(^\circ \)
    Correct
  • D
    40\(^\circ \), 100\(^\circ \)
6
The triangle whose lengths of sides are 3 cm, 4 cm, 5 cm is a __________.
  • A
    None of these
  • B
    obtuse-angled triangle
  • C
    right-angled triangle
    Correct
  • D
    acute-angled triangle
7
Find the value of x in the below figure.
Question 7 figure 1
  • A
    30
  • B
    80
  • C
    70
    Correct
  • D
    40
8
A 15 m long ladder reached a window 12 m high from the ground on placing it against a wall at a distance a. Find the distance of the foot of the ladder from the wall.
  • A
    None of these
  • B
    12 m
  • C
    10 m
  • D
    9 m
    Correct
9
A tree is broken at a height of 5 m from the ground and its top touches the ground at a distance of 12 m from the base of the tree. Find the original height of the tree.
  • A
    13 m
  • B
    18 m
    Correct
  • C
    15 m
  • D
    20 m
10
Find the perimeter of the rectangle whose length is 40 cm and a diagonal is 41 cm.
  • A
    98 cm
    Correct
  • B
    50 cm
  • C
    44 cm
  • D
    88 cm
11
The diagonals of a rhombus measure 16 cm and 30 cm. Find its perimeter.
  • A
    68 cm
    Correct
  • B
    60 cm
  • C
    56 cm
  • D
    64 cm
12
The triangle whose lengths of sides are 8 cm, 15 cm, 17 cm is a __________.
  • A
    obtuse-angled triangle
  • B
    right-angled triangle
    Correct
  • C
    None of these
  • D
    acute-angled triangle
13
The triangle whose lengths of sides are 7 cm, 24 cm, 25 cm is a __________.
  • A
    right-angled triangle
    Correct
  • B
    None of these
  • C
    acute-angled triangle
  • D
    obtuse-angled triangle
14
The three angles of a triangle are in the ratio 6:3:1. Find all the angles of the triangle.
  • A
    100\(^\circ \), 80\(^\circ \), 20\(^\circ \)
  • B
    108\(^\circ \), 54\(^\circ \), 18\(^\circ \)
    Correct
  • C
    50\(^\circ \), 40\(^\circ \), 10\(^\circ \)
  • D
    None of these
15
One of the angles of a triangle is 150\(^\circ \) and the other two angles are equal. Find the measure of each of the equal angles.
  • A
    30\(^\circ \), 30\(^\circ \)
  • B
    45\(^\circ \), 45\(^\circ \)
  • C
    15\(^\circ \), 15\(^\circ \)
    Correct
  • D
    40\(^\circ \), 40\(^\circ \)