Mathematics for IGCSE & O level - Angles (Section 3)
1
What is the measure of a right angle?
إجابة
(C)
90°
2
If two lines intersect, forming angles a, b, c, and d, which angles are vertically opposite angles?
إجابة
B
D
3
In a parallelogram, what is the relationship between opposite sides?
إجابة
(A)
They are equal and parallel.
4
What is the sum of the exterior angles of a convex polygon?
إجابة
(C)
360°
5
If the interior angles of a polygon add up to 1080°, how many sides does the polygon have?
إجابة
(C)
8
6
Which of the following is a property of an isosceles triangle?
إجابة
(C)
Two sides are equal.
7
If a transversal intersects two parallel lines, which of the following angles are equal?
إجابة
A
B
D
8
What is the measure of an angle that forms a complete circle?
إجابة
(D)
360°
9
If two angles form a linear pair, what is the sum of their measures?
إجابة
(C)
180°
10
What is the measure of a straight angle?
إجابة
(C)
180°
11
What kind of triangle has no equal sides or angles?
إجابة
(B)
Scalene
12
What is the sum of the interior angles in a regular octagon?
إجابة
(C)
1080°
13
What do we call angles that are next to each other, sharing a common vertex and side?
إجابة
(D)
Adjacent angles
14
If the interior angle of a regular polygon is 150°, how many sides does it have?
إجابة
(D)
12
15
Which of these pairs of angles add up to 180°?
إجابة
(C)
Supplementary Angles
16
How many degrees are in an obtuse angle?
إجابة
(C)
More than 90° but less than 180°
17
If an angle is 110°, what is its supplementary angle?
إجابة
(A)
70°
18
Which of the following statements is true about vertically opposite angles?
إجابة
(D)
They are equal.
19
If two angles are complementary, what is the sum of their measures?
إجابة
(A)
90°
20
Which of the following describes a scalene triangle?
إجابة
(D)
No sides are equal.
21
What is the measure of each interior angle of an equilateral triangle?
إجابة
(C)
60°
22
What is the measure of an angle that forms a complete revolution?
إجابة
(D)
360°
23
What must be true of the two acute angles in a right triangle?
إجابة
(B)
They are complementary.
24
If two angles are supplementary and one angle measures 60 degrees, what is the measure of the other angle?
إجابة
(C)
120°
25
What is the term for two angles that share a vertex and a common side?
إجابة
(D)
Adjacent angles
26
In a parallelogram, the opposite sides are:
إجابة
(A)
Equal and parallel
27
In a triangle, the angles are represented by x, 2x, and 3x. What is the value of x?
إجابة
(A)
30°
28
If two lines intersect, and one angle is 40 degrees, what is the measure of its vertically opposite angle?
إجابة
(A)
40°
29
If an angle and its complement are equal, what is the measure of the angle?
إجابة
(B)
45°
30
What is the sum of interior angles of a triangle?
إجابة
(B)
180°
31
In a regular polygon, if each interior angle is 135°, how many sides does the polygon have?
إجابة
(C)
10
32
What's the sum of exterior angles in a quadrilateral?
إجابة
(D)
360°
33
If a quadrilateral has angles of 60°, 120°, and 70°, what is the value of the fourth angle?
إجابة
(D)
120°
34
What is the sum of the interior angles of a quadrilateral?
إجابة
(C)
360°
35
If a line segment is extended to make a straight line, what is the measurement of the angle created?
إجابة
(C)
180°
36
If two parallel lines are cut by a transversal, and one of the interior angles on the same side of the transversal is 110°, what is the measure of the other interior angle on the same side?
إجابة
(A)
70°
37
What is the sum of the interior angles of a polygon with 5 sides (a pentagon)?
إجابة
(C)
540°
38
In a triangle, the angles are in the ratio 2:3:4. What is the largest angle?
إجابة
(C)
80°
39
What is the relationship between corresponding angles formed by a transversal and two parallel lines?
إجابة
(C)
Congruent
40
Which of these describes a regular polygon?
إجابة
(C)
All sides and angles are equal
41
Which type of triangle has all three sides equal?
إجابة
(C)
Equilateral
42
In a triangle with angles x, 2x, and 3x, what kind of triangle is it?
إجابة
(C)
Right
43
What is always true about vertically opposite angles?
إجابة
(C)
They are equal
44
If the interior angle of a regular polygon is 108°, how many sides does the polygon have?
إجابة
(B)
5
45
What type of triangle has three equal sides and three equal angles?
إجابة
(D)
Equilateral
46
If a line segment divides an angle into two equal parts, what is that line segment called?
إجابة
(C)
Bisector
47
What is the sum of the interior angles in a triangle?
إجابة
(B)
180°
48
What is the sum of the exterior angles of a triangle?
إجابة
(D)
360°
49
Which of the following are properties of parallel lines cut by a transversal?
إجابة
A
B
C
50
Which of the following statements is true about the exterior angle of a triangle?
إجابة
(D)
It is equal to the sum of the two opposite interior angles.
