Mathematics for IGCSE & O level - Angles (Section 1)

  • 1
    The sum of the angles on a straight line is:
    Risposta
    (B)
    180°
  • 2
    The exterior angles of a convex polygon add up to:
    Risposta
    (C)
    360°
  • 3
    If the exterior angle of a regular polygon is 24 degrees, how many sides does the polygon have?
    Risposta
    (B)
    15
  • 4
    If two parallel lines are intersected by a transversal, what is the relationship between alternate angles?
    Risposta
    (C)
    Equal
  • 5
    What is the value of x in a triangle where one angle is 90 degrees and another is 30 degrees?
    Risposta
    (B)
    60°
  • 6
    What is the sum of the angles in a quadrilateral?
    Risposta
    (D)
    360°
  • 7
    In an equilateral triangle, what is the measure of each angle?
    Risposta
    (C)
    60°
  • 8
    Which terms apply to angles?
    Risposta
    A
    B
    C
  • 9
    A triangle with one right angle is called a:
    Risposta
    (D)
    Right-angled
  • 10
    What is the measure of the missing angle in a parallelogram with angles of 60°, 120°, and 60°?
    Risposta
    (D)
    120°
  • 11
    A triangle has angles of 40° and 70°. What is the measure of the third angle?
    Risposta
    (B)
    60°
  • 12
    Which statements about a square are true?
    Risposta
    A
    B
    C
  • 13
    What is the interior angle of a regular hexagon?
    Risposta
    (C)
    120°
  • 14
    Which of the following are ways to describe angles?
    Risposta
    A
    B
    C
    D
  • 15
    Which properties describe a rectangle?
    Risposta
    B
    C
    D
  • 16
    For an isosceles triangle:
    Risposta
    A
    C
  • 17
    What is the measure of each interior angle in a regular octagon?
    Risposta
    (C)
    135°
  • 18
    The sum of the angles around a point is:
    Risposta
    (D)
    360°
  • 19
    Which of the following is a characteristic of an isosceles triangle?
    Risposta
    (C)
    Two sides are equal.
  • 20
    Which angle pair is an example of supplementary angles?
    Risposta
    (D)
    Co-interior angles
  • 21
    If two lines are parallel and cut by a transversal, the co-interior angles are:
    Risposta
    (B)
    Supplementary
  • 22
    Which statement is true about the interior angles of a polygon?
    Risposta
    A
    C
  • 23
    A polygon with 10 sides is called a:
    Risposta
    (D)
    Decagon
  • 24
    Which properties describe a rhombus?
    Risposta
    A
    B
    D
  • 25
    What type of triangle has all angles less than 90 degrees?
    Risposta
    (B)
    Acute
  • 26
    If two parallel lines are intersected by a transversal, what is the relationship between corresponding angles?
    Risposta
    (C)
    Equal
  • 27
    Which shapes are quadrilaterals?
    Risposta
    B
    C
    D
  • 28
    What is the sum of the interior angles of a pentagon?
    Risposta
    (C)
    540°
  • 29
    What is the sum of the interior angles of a triangle?
    Risposta
    (B)
    180°
  • 30
    Which of the following describes a polygon?
    Risposta
    A
    B
    D
  • 31
    If two lines meet at right angles, the angles are:
    Risposta
    (C)
    Complementary
  • 32
    What is the relationship between an interior angle and an exterior angle on the same vertex of a polygon?
    Risposta
    (A)
    Supplementary
  • 33
    Which shape has interior angles that sum to 360 degrees?
    Risposta
    (B)
    Quadrilateral
  • 34
    What is the exterior angle of a regular decagon?
    Risposta
    (A)
    36°
  • 35
    Which is a characteristic of a kite?
    Risposta
    (C)
    Two pairs of adjacent sides equal
  • 36
    Which of the following are ways to identify an angle?
    Risposta
    A
    B
    C
    D
  • 37
    If two lines intersect, what is the relationship between vertically opposite angles?
    Risposta
    (C)
    Equal
  • 38
    Which of the following statements are true about a straight line?
    Risposta
    A
    C
    D
  • 39
    What is the size of each exterior angle in a regular hexagon?
    Risposta
    (B)
    60°
  • 40
    In a triangle, if all three sides are different lengths, the triangle is called:
    Risposta
    (C)
    Scalene
  • 41
    If the exterior angle of a regular polygon is 45°, how many sides does the polygon have?
    Risposta
    (C)
    8
  • 42
    Which type of triangle has one angle greater than 90 degrees?
    Risposta
    (C)
    Obtuse
  • 43
    If two parallel lines are intersected by a transversal, what is the relationship between co-interior angles?
    Risposta
    (B)
    They are supplementary.
  • 44
    Which terms are associated with interior angles?
    Risposta
    (C)
    Alternate
  • 45
    Which type of angle is greater than 90 degrees but less than 180 degrees?
    Risposta
    (C)
    Obtuse
  • 46
    In a quadrilateral, the angles are x, 2x, 3x, and 4x. What is the value of the smallest angle?
    Risposta
    (A)
    36°
  • 47
    What must be true about the two acute angles in a right triangle?
    Risposta
    (B)
    They are complementary.
  • 48
    What's the definition of a transversal?
    Risposta
    (A)
    A line that intersects two or more other lines.
  • 49
    Which of the following are always congruent when two parallel lines are cut by a transversal?
    Risposta
    A
    B
    D
  • 50
    What is the measure of each interior angle of a regular hexagon?
    Risposta
    (B)
    120°