About this Study Set
This study set covers Trigonometry through
25 practice questions.
This set of questions focuses on fundamental concepts related to angles and the very basic ideas that lead to trigonometry, suitable for an elementary school curriculum. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 25 questions from the
Introduction to Angles and Basic Trigonometry Concepts study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
What is the name for a turn that is exactly half of a full circle?
-
A
A full turn
-
B
A straight angle
-
C
A right angle
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D
A reflex angle
2
How many degrees are in a complete circle?
-
A
90 degrees
-
B
180 degrees
-
C
270 degrees
-
D
360 degrees
3
What type of angle is exactly 90 degrees?
-
A
An acute angle
-
B
An obtuse angle
-
C
A right angle
-
D
A straight angle
4
An angle that measures less than 90 degrees is called:
-
A
A right angle
-
B
An obtuse angle
-
C
A straight angle
-
D
An acute angle
5
An angle that measures more than 90 degrees but less than 180 degrees is called:
-
A
An acute angle
-
B
A right angle
-
C
An obtuse angle
-
D
A reflex angle
6
When two lines meet and form a 90-degree angle, they are said to be:
-
A
Parallel
-
B
Intersecting
-
C
Perpendicular
-
D
Skew
7
If you draw a line that cuts across two other lines, what are the two other lines called?
-
A
Parallel lines
-
B
Perpendicular lines
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C
Intersecting lines
-
D
Transversal lines
8
What shape has three sides and three angles?
-
A
Square
-
B
Circle
-
C
Triangle
-
D
Rectangle
9
In a triangle, the sum of all three angles is always:
-
A
90 degrees
-
B
180 degrees
-
C
270 degrees
-
D
360 degrees
10
What do we call a line that extends endlessly in one direction from a starting point?
-
A
A line segment
-
B
A line
-
C
A ray
-
D
A curve
11
Which angle is often seen in the corner of a square or a book?
-
A
An acute angle
-
B
A straight angle
-
C
A right angle
-
D
An obtuse angle
12
A shape with four equal sides and four right angles is a:
-
A
Rectangle
-
B
Triangle
-
C
Rhombus
-
D
Square
13
If you face north and then turn exactly 180 degrees, which direction will you be facing?
-
A
East
-
B
South
-
C
West
-
D
North-East
14
Which of these angles is the smallest type of angle?
-
A
A right angle
-
B
An obtuse angle
-
C
An acute angle
-
D
A straight angle
15
What is the term for a shape with no corners and no straight sides?
-
A
Square
-
B
Triangle
-
C
Circle
-
D
Hexagon
16
If you divide a circle into four equal parts, the angle at the center of each part is:
-
A
90 degrees
-
B
180 degrees
-
C
270 degrees
-
D
360 degrees
17
Which of the following is a unit of measurement for angles?
-
A
Metres
-
B
Kilograms
-
C
Degrees
-
D
Litres
18
An angle formed by two lines that are parallel and do not meet is:
-
A
A right angle
-
B
An acute angle
-
C
A straight angle
-
D
Zero degrees
19
What shape has exactly two parallel sides, but the other two sides are not parallel?
-
A
Square
-
B
Rectangle
-
C
Trapezium
-
D
Rhombus
20
If you have a clock and the hour hand moves from the '3' to the '6', what kind of angle has been formed?
-
A
An acute angle
-
B
A right angle
-
C
An obtuse angle
-
D
A straight angle
21
What do we call the point where two lines meet to form an angle?
-
A
Edge
-
B
Side
-
C
Vertex
-
D
Base
22
A line that goes straight across, like the horizon, forms an angle of:
-
A
90 degrees
-
B
180 degrees
-
C
270 degrees
-
D
0 degrees
23
Which of these is a measure of an angle that is larger than a right angle?
-
A
30 degrees
-
B
60 degrees
-
C
120 degrees
-
D
90 degrees
24
What is the name for a turn of exactly 90 degrees?
-
A
A full turn
-
B
A half turn
-
C
A quarter turn
-
D
A three-quarter turn
25
If you have a shape with 5 sides, what is it called?
-
A
Square
-
B
Hexagon
-
C
Pentagon
-
D
Octagon
