Master Basic Geometric Shapes: Interactive Quizzes for Eighth Graders

Question 1

How many faces does a rectangular prism have?

Accepted Answer

6

Answer

4

Answer

8

Answer

12

Question 2

What is the formula used to calculate the area of a circle?

Accepted Answer

A = πr²

Answer

A = πr

Answer

A = 2πr

Answer

A = 4πr²

Question 3

Which three-dimensional shape has two flat and parallel circular faces?

Accepted Answer

Cylinder

Answer

Sphere

Answer

Cone

Answer

Cube

Question 4

Which of the following is NOT a property of all triangles?

Accepted Answer

Two right angles

Answer

Three sides

Answer

Three angles

Answer

Sum of angles is 180 degrees

Question 5

Which of the following describes a circle?

Accepted Answer

All points on a circle are the same distance from a fixed point called the center.

Answer

It has four equal sides.

Answer

It has three vertices.

Answer

It has two parallel sides.

Question 6

What is the name of the three-dimensional shape with six square faces?

Accepted Answer

Cube

Answer

Sphere

Answer

Cone

Answer

Cylinder

Question 7

Which shape is two-dimensional?

Accepted Answer

Triangle

Answer

Sphere

Answer

Cube

Answer

Cone

Question 8

Which of the following is a characteristic of two congruent triangles?

Accepted Answer

Corresponding sides and angles are equal.

Answer

All sides are equal.

Answer

All angles are equal.

Answer

The area is equal.

Question 9

What is the perimeter of a square with a side length of 6 cm?

Accepted Answer

24 cm

Answer

12 cm

Answer

18 cm

Answer

36 cm

Question 10

Which shape has four equal sides and four right angles?

Accepted Answer

Square

Answer

Rectangle

Answer

Rhombus

Answer

Trapezoid

Question 11

Which shape is a regular polygon?

Accepted Answer

Square

Answer

Triangle

Answer

Trapezoid

Answer

Pentagon

Question 12

Which of the following is NOT a property of a rectangle?

Accepted Answer

Diagonals are perpendicular

Answer

Opposite sides of equal length

Answer

Four right angles

Answer

Opposite sides parallel

Question 13

What is the name of the shape that has three sides and three angles?

Accepted Answer

Triangle

Answer

Square

Answer

Circle

Answer

Pentagon

Question 14

What is the name of the angle formed by two adjacent sides of a polygon?

Accepted Answer

Interior angle

Answer

Exterior angle

Answer

Obtuse angle

Answer

Acute angle

Question 15

Which of the following shapes has 8 sides?

Accepted Answer

Octagon

Answer

Heptagon

Answer

Nonagon

Answer

Decagon

Question 16

What is the sum of the interior angles of a triangle?

Accepted Answer

180 degrees

Answer

240 degrees

Answer

270 degrees

Answer

360 degrees

Question 17

What is the name of the line that divides a circle into two equal parts?

Accepted Answer

Diameter

Answer

Radius

Answer

Chord

Answer

Tangent

Question 18

Identify the characteristic that is **not** a property of a parallelogram:

Accepted Answer

All sides are of equal length

Answer

Opposite sides are parallel

Answer

Opposite angles are congruent

Answer

Diagonals bisect each other

Question 19

Identify the shape that is classified as a concave polygon:

Accepted Answer

Concave pentagon

Answer

Circle

Answer

Square

Answer

Convex hexagon

Question 20

Which shape exhibits rotational symmetry?

Accepted Answer

Square

Answer

Triangle

Answer

Pentagon

Answer

Trapezoid

Question 21

Identify the shape that is **not** classified as a polygon:

Accepted Answer

Circle

Answer

Triangle

Answer

Square

Answer

Pentagon

Question 22

Calculate the perimeter of a triangle with side lengths of 5 cm, 7 cm, and 10 cm:

Accepted Answer

22 cm

Answer

12 cm

Answer

32 cm

Answer

44 cm

Question 23

Which theorem relates to the angles in a triangle?

Accepted Answer

Exterior Angle Theorem

Answer

Pythagorean Theorem

Answer

Triangle Inequality Theorem

Answer

Area of a Triangle Formula

Question 24

Which property best describes a shape that has length and width, but not height?

Accepted Answer

Two-dimensional

Answer

Three-dimensional

Answer

Regular

Answer

Symmetrical

Question 25

Which shape is a quadrilateral with four equal sides and four right angles?

Accepted Answer

Square

Answer

Rectangle

Answer

Triangle

Answer

Circle

Question 26

What is the name of a polygon with six sides?

Accepted Answer

Hexagon

Answer

Pentagon

Answer

Heptagon

Answer

Octagon

Question 27

What is the formula for finding the circumference of a circle?

Accepted Answer

Pi x Diameter

Answer

Length x Width

Answer

Base x Height / 2

Answer

Side^3

Question 28

What is the name of the line segment that passes through the center of a circle and connects two points on the circle?

Accepted Answer

Diameter

Answer

Chord

Answer

Tangent

Answer

Radius

Question 29

A quadrilateral with two pairs of parallel sides is known as a:

Accepted Answer

Parallelogram

Answer

Rectangle

Answer

Rhombus

Answer

Trapezoid

Question 30

The sum of the interior angles of a triangle measures:

Accepted Answer

180 degrees

Answer

90 degrees

Answer

270 degrees

Answer

360 degrees

Question 31

What defines a circle?

Accepted Answer

Its center and radius

Answer

Its diameter and circumference

Answer

Its area and perimeter

Answer

Its vertices and angles

Question 32

Similar shapes share the same:

Accepted Answer

Shape

Answer

Size

Answer

Area

Answer

Perimeter

Question 33

To calculate the area of a rectangle, you use the formula:

Accepted Answer

Length x width

Answer

Length + width

Answer

Length - width

Answer

Length / width

Question 34

Which of the following is not a type of geometric transformation?

Accepted Answer

Stretching

Answer

Translation

Answer

Reflection

Answer

Rotation

Question 35

Calculate the perimeter of a rectangle with a length of 8 cm and a width of 5 cm.

Accepted Answer

26 cm

Answer

13 cm

Answer

40 cm

Answer

52 cm

Question 36

Identify the three-dimensional shape from the following:

Accepted Answer

Cube

Answer

Triangle

Answer

Circle

Answer

Square

Question 37

Which of the following is NOT a basic geometric shape?

Accepted Answer

Star

Answer

Circle

Answer

Triangle

Answer

Square

Question 38

Identify the shape with four congruent sides:

Accepted Answer

Square

Answer

Ellipse

Answer

Circle

Answer

Triangle

Question 39

Classify the polygon with congruent sides and congruent angles:

Accepted Answer

Regular polygon

Answer

Trapezoid

Answer

Parallelogram

Answer

Rectangle

Question 40

Identify the fundamental property of a circle:

Accepted Answer

All points on the circle are an equal distance from its center.

Answer

It has four equal sides.

Answer

It possesses three vertices.

Question 41

Determine the volume of a cube with sides measuring 3 centimeters:

Accepted Answer

27 cubic centimeters

Answer

18 cubic centimeters

Answer

9 cubic centimeters

Question 42

Identify the shape with a circular base and a single vertex:

Accepted Answer

Cone

Answer

Rectangular prism

Answer

Cylinder

Answer

Cube

Question 43

Classify the angle formed when two intersecting lines measure less than 90 degrees:

Accepted Answer

Acute angle

Answer

Reflex angle

Answer

Obtuse angle

Answer

Right angle

Question 44

Which of the following is NOT a characteristic of polygons?

Accepted Answer

Rounded edges

Answer

Closed figure

Answer

Multiple angles

Answer

Straight sides

Question 45

What type of triangle has all sides of equal length?

Accepted Answer

Equilateral triangle

Answer

Isosceles triangle

Answer

Scalene triangle

Answer

Right triangle

Question 46

How many lines of symmetry does a rectangle have?

Accepted Answer

2

Answer

1

Answer

3

Answer

4

Question 47

What is the measure of the sum of the interior angles of a quadrilateral?

Accepted Answer

360 degrees

Answer

180 degrees

Answer

90 degrees

Answer

540 degrees

Question 48

Which of the following shapes has both parallel and perpendicular sides?

Accepted Answer

Rectangle

Answer

Circle

Answer

Triangle

Question 49

A polygon with six sides is called a:

Accepted Answer

Hexagon

Answer

Octagon

Answer

Pentagon

Answer

Heptagon

Question 50

Which of these is NOT a property of a rectangle?

Accepted Answer

All angles are acute.

Answer

Diagonals are equal in length

Answer

Opposite sides are parallel.

Answer

All interior angles are right angles.

Question 51

Lines that intersect to form a right angle are called:

Accepted Answer

Perpendicular lines

Answer

Skew lines

Answer

Intersecting lines

Answer

Parallel lines

Question 52

A closed figure made up of line segments is called a:

Accepted Answer

Polygon

Answer

Circle

Answer

Solid

Answer

Curve

Question 53

Which of the following shapes has no straight sides?

Accepted Answer

Circle

Answer

Triangle

Answer

Rectangle

Answer

Square