Mathematics
Grade9
Easy

Question

What is the value of x?

  1. 9
  2. 27
  3. 137

hintHint:

Vertical angles are formed when two lines meet each other at a point. They are always equal to each other.

The correct answer is: 9


    Here, we have to find the value of x.
    From vertically opposite angles,
    5x = 45
    x = 9
    Hence, the correct option is (a).

    When two lines intersect each other, then the opposite angles, formed due to intersection are called vertical angles or vertically opposite angles.

    Related Questions to study

    Grade9
    Mathematics

    Name a pair of angles that are vertical.

    They are always equal to each other. In other words, whenever two lines cross or intersect each other, 4 angles are formed. We can observe that two angles that are opposite to each other are equal and they are called vertical angles.

    Name a pair of angles that are vertical.

    MathematicsGrade9

    They are always equal to each other. In other words, whenever two lines cross or intersect each other, 4 angles are formed. We can observe that two angles that are opposite to each other are equal and they are called vertical angles.

    Grade9
    Mathematics

    Find the values of x and y.

    Vertically opposite angles are always equal.

    Find the values of x and y.

    MathematicsGrade9

    Vertically opposite angles are always equal.

    Grade9
    Mathematics

    In a figure, ∠ A and ∠ D are complementary angles and m∠ A = 4x. Which expression can be used to find m∠ D?

    Sum of angles A and D is 90°.

    In a figure, ∠ A and ∠ D are complementary angles and m∠ A = 4x. Which expression can be used to find m∠ D?

    MathematicsGrade9

    Sum of angles A and D is 90°.

    parallel
    Grade9
    Mathematics

    Given that m∠FHE = m∠BHG = m∠AHF = 90 in the below diagram, answer the following:
    If m∠3 = 32, then m∠2 =?

    Angle 2 and 3 form a right angle.

    Given that m∠FHE = m∠BHG = m∠AHF = 90 in the below diagram, answer the following:
    If m∠3 = 32, then m∠2 =?

    MathematicsGrade9

    Angle 2 and 3 form a right angle.

    Grade9
    Mathematics

    Given that m∠FHE = m∠BHG = m∠AHF = 90 in the below diagram, answer the following:
    if m∠ DHF = 133, then m∠ CHG =?

    Vertical angles are formed when two lines meet each other at a point.

    Given that m∠FHE = m∠BHG = m∠AHF = 90 in the below diagram, answer the following:
    if m∠ DHF = 133, then m∠ CHG =?

    MathematicsGrade9

    Vertical angles are formed when two lines meet each other at a point.

    Grade9
    Mathematics

    Given that m∠FHE = m∠BHG = m∠AHF = 90 in the below diagram, answer the following:
    If m∠6 = 27, then m∠1 =?

    Vertical angles are formed when two lines meet each other at a point.

    Given that m∠FHE = m∠BHG = m∠AHF = 90 in the below diagram, answer the following:
    If m∠6 = 27, then m∠1 =?

    MathematicsGrade9

    Vertical angles are formed when two lines meet each other at a point.

    parallel
    Grade9
    Mathematics

    Given that m∠FHE = m∠BHG = m∠AHF = 90 in the below diagram, answer the following:
    if m∠ BHF = 115, then m∠3 =?

    Vertical angles are formed when two lines meet each other at a point.

    Given that m∠FHE = m∠BHG = m∠AHF = 90 in the below diagram, answer the following:
    if m∠ BHF = 115, then m∠3 =?

    MathematicsGrade9

    Vertical angles are formed when two lines meet each other at a point.

    Grade9
    Mathematics

    Given that m∠FHE = m∠BHG = m∠AHF = 90 in the below diagram, answer the following:
    If m∠3 = 30, then m∠6 =?

    Vertical angles are formed when two lines meet each other at a point.

    Given that m∠FHE = m∠BHG = m∠AHF = 90 in the below diagram, answer the following:
    If m∠3 = 30, then m∠6 =?

    MathematicsGrade9

    Vertical angles are formed when two lines meet each other at a point.

    Grade9
    Mathematics

    In the diagram, if m∠2 = 62, find m∠1, m∠3, and m∠4.

    Vertical angles are formed when two lines meet each other at a point.

    In the diagram, if m∠2 = 62, find m∠1, m∠3, and m∠4.

    MathematicsGrade9

    Vertical angles are formed when two lines meet each other at a point.

    parallel
    Grade9
    Mathematics

    Where do planes AGE, GHI, and JIE intersect?

    There are infinite number of lines in a plane.

    Where do planes AGE, GHI, and JIE intersect?

    MathematicsGrade9

    There are infinite number of lines in a plane.

    Grade9
    Mathematics

    Where do plane ACH and plane GFE intersect?

    Where do plane ACH and plane GFE intersect?

    MathematicsGrade9
    Grade9
    Mathematics

    Name a point that is coplanar with A, E, and J.

    A plane has infinite number of lines and points. All the points in a plane are called coplanar.

    Name a point that is coplanar with A, E, and J.

    MathematicsGrade9

    A plane has infinite number of lines and points. All the points in a plane are called coplanar.

    parallel
    Grade9
    Mathematics

    Use the diagram to tell if the statement is true or false.

    ∠NKL and ∠JKM are vertical angles.

    Vertical angles are angles opposite each other where two lines cross.

    Use the diagram to tell if the statement is true or false.