About this Study Set
This study set covers Geometry through
25 practice questions.
A collection of factual questions covering polygons, angles, circles, and geometric properties. 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
Fundamentals of Basic Geometry study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
What is the sum of the interior angles of a quadrilateral?
-
A
180 degrees
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B
270 degrees
-
C
360 degrees
-
D
540 degrees
2
A polygon with seven sides is known by which name?
-
A
Heptagon
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B
Hexagon
-
C
Nonagon
-
D
Octagon
3
In a right-angled triangle, what is the side opposite the right angle called?
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A
Adjacent
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B
Tangent
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C
Hypotenuse
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D
Vertex
4
What is the term for an angle that measures exactly 180 degrees?
-
A
Acute angle
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B
Obtuse angle
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C
Reflex angle
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D
Straight angle
5
How many degrees are in a full circle?
6
A triangle with all three sides of different lengths is called what?
-
A
Equilateral
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B
Isosceles
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C
Scalene
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D
Right
7
Which geometric shape has exactly four equal sides and four right angles?
-
A
Rectangle
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B
Rhombus
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C
Square
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D
Trapezium
8
What is the line segment that connects two points on a circle and passes through the centre called?
-
A
Radius
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B
Chord
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C
Diameter
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D
Tangent
9
What is the sum of the interior angles of a triangle?
-
A
90 degrees
-
B
180 degrees
-
C
270 degrees
-
D
360 degrees
10
Which type of angle is greater than 90 degrees but less than 180 degrees?
-
A
Acute
-
B
Obtuse
-
C
Reflex
-
D
Right
11
What is the perimeter of a circle called?
-
A
Arc
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B
Circumference
-
C
Radius
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D
Diameter
12
A polygon with five sides is called a:
-
A
Pentagon
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B
Hexagon
-
C
Heptagon
-
D
Octagon
13
Two angles that add up to 90 degrees are known as:
-
A
Supplementary
-
B
Vertical
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C
Adjacent
-
D
Complementary
14
What is the point where two sides of a polygon meet called?
-
A
Edge
-
B
Vertex
-
C
Face
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D
Plane
15
A triangle that has two equal sides is called:
-
A
Scalene
-
B
Equilateral
-
C
Isosceles
-
D
Right
16
Which 3D shape has six equal square faces?
-
A
Rectangular prism
-
B
Cylinder
-
C
Sphere
-
D
Cube
17
What is the distance from the centre of a circle to any point on its edge called?
-
A
Diameter
-
B
Circumference
-
C
Radius
-
D
Chord
18
How many faces does a triangular pyramid (tetrahedron) have?
19
What do you call an angle that is less than 90 degrees?
-
A
Acute
-
B
Obtuse
-
C
Straight
-
D
Reflex
20
A parallelogram with four equal sides but not necessarily right angles is called a:
-
A
Rectangle
-
B
Trapezoid
-
C
Rhombus
-
D
Kite
21
What is the name of the polygon with eight sides?
-
A
Heptagon
-
B
Octagon
-
C
Nonagon
-
D
Decagon
22
Two angles that add up to 180 degrees are called:
-
A
Complementary
-
B
Supplementary
-
C
Vertical
-
D
Adjacent
23
Which term describes lines that are always the same distance apart and never meet?
-
A
Perpendicular
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B
Intersecting
-
C
Parallel
-
D
Transversal
24
What is the geometric term for a flat, two-dimensional surface that extends infinitely?
-
A
Line
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B
Ray
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C
Plane
-
D
Segment
25
How many vertices does a cube have?
