Equilateral Triangles (Outer Space Themed) Math Worksheets

Definition

• An equilateral triangle is a triangle in which all three sides and all three angles are of equal measurement.

Facts & Information

• When you add all three angles of a triangle, the sum is always 180⁰.
• If we divide 180⁰ by 3, each angle will equally measure 60⁰. Therefore, all angles of an equilateral triangle will always measure 60⁰.
• As all angles of an equilateral triangle are less than 90⁰, it is also classified as a type of acute triangle.

Measuring Equilateral Triangles

An equilateral triangle is defined by having all sides with equal measurements and all angles measuring the same 60⁰. 

We can simply find out if a triangle is equilateral by measuring all sides of the triangle using a ruler. If all sides have the same measurements, then it is an equilateral triangle.

Otherwise, we could also use a protractor, which is a tool that we can use to measure angles.

It is usually a flat semicircular form with the angle degrees marked on the curved side.

Equilateral Triangles (Outer Space Themed) Worksheets

This is a fantastic bundle that includes everything you need to know about Equilateral Triangles across 21 in-depth pages. These are ready-to-use worksheets aimed at students 7-9 years of age.

Each ready to use worksheet collection includes 10 activities and an answer guide. Not quite right for your class? Don’t worry! All our worksheets are completely editable so can be tailored for your curriculum and target audience.

Resource Examples

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Worksheets Activities Included

Ages 7-8 (Basic) 3rd Grade

• 3, 2, 1…Blast Off!
• Rocketship
• Moon Landing
• The Solar System
• Team Astronaut

Ages 8-9 (Advanced) 4th Grade

• Wish Upon A Star
• Space Station
• Life On Mars
• Status Update
• Out of this World