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