Fundamental Geometry Facts

Geometry

A collection of easy, factual multiple-choice questions focusing on basic geometric principles, shapes, and measurements.

math shapes angles measurements facts

15 Questions Easy Ages 7+ Aug 5, 2026

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About this Study Set

This study set covers Geometry through 15 practice questions. A collection of easy, factual multiple-choice questions focusing on basic geometric principles, shapes, and measurements. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

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Browse all 15 questions from the Fundamental Geometry Facts 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 any triangle?

A 90 degrees
B 180 degrees
C 270 degrees
D 360 degrees

2 Which geometric shape has exactly four equal sides and four right angles?

A Rectangle
B Rhombus
C Square
D Trapezoid

3 What is a straight line that passes through the center of a circle and touches two points on its circumference called?

A Radius
B Chord
C Tangent
D Diameter

4 Lines that are always the same distance apart and never intersect are known as what type of lines?

A Perpendicular lines
B Intersecting lines
C Parallel lines
D Skew lines

5 An angle that measures exactly 90 degrees is called a(n) ______ angle.

A Acute
B Obtuse
C Right
D Straight

6 How many sides does a pentagon have?

A Three
B Four
C Five
D Six

7 Which of these is a three-dimensional shape with six identical square faces?

A Pyramid
B Cylinder
C Cube
D Sphere

8 The distance around the outside of a circle is called its what?

A Area
B Radius
C Diameter
D Circumference

9 What geometric tool is used to measure angles?

A Ruler
B Compass
C Protractor
D Set square

10 A triangle with all three sides of different lengths is called a(n) ______ triangle.

A Isosceles
B Equilateral
C Scalene
D Right

11 What is the common point where two rays or line segments meet to form an angle called?

A Side
B Vertex
C Edge
D Plane

12 Which term describes an angle that is greater than 90 degrees but less than 180 degrees?

A Acute angle
B Reflex angle
C Straight angle
D Obtuse angle

13 The shortest distance between two points is always what kind of line?

A Curved line
B Dotted line
C Zigzag line
D Straight line

14 What is the formula for the area of a rectangle?

A Length + Width
B 2 * (Length + Width)
C Length * Width
D Length / Width

15 What is the name for a polygon with eight sides?

A Hexagon
B Heptagon
C Octagon
D Nonagon

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