# Worksheet: Equilateral Triangles

Q1:

One side of an equaliteral triangle has length . Another side has length . Find the perimeter of the triangle.

Q2:

One side of an equaliteral triangle has length . Another side has length . Find the perimeter of the triangle.

Q3:

The perimeter of an equilateral triangle is equal to the perimeter of a rectangle with a length of 5 cm and a width of 4 cm. Find the length of one side of the triangle.

Q4:

The perimeter of an equilateral triangle is equal to the perimeter of a rectangle with a length of 12 cm and a width of 9 cm. Find the length of one side of the triangle.

Q5:

The diagram shows an equilateral triangle. Find the length of its sides.

Q6:

The diagram shows an equilateral triangle. Find the length of its sides.

Q7:

The diagram shows an equilateral triangle. Find the length of its sides.

Q8:

In the figure, find the values of and .

• A ,
• B ,
• C ,
• D ,

Q9:

In the figure, find the values of and .

• A ,
• B ,
• C ,
• D ,
• E ,

Q10:

Calculate the length of one of the sides of an equilateral triangle which has a perimeter of 93 m.

Q11:

Given that triangle is equilateral, and , determine the lengths of and .

• A 60 cm, 60 cm
• B 240 cm, 240 cm
• C 120 cm, 240 cm
• D 120 cm, 120 cm

Q12:

If one of the sides of an equilateral triangle measures 50 cm, calculate its perimeter.

Q13:

A triangle has three sides equal in length and a perimeter of 24 length units. Find the length of one of its sides.

Q14:

If a square with side length 54 cm has the same perimeter as an equilateral triangle, what is the side length of the triangle?

Q15:

Find the value of given is a triangle where .

Q16:

What is the ratio of the length of a side of an equilateral triangle to its perimeter?

• A
• B
• C
• D
• E

Q17:

What is the size of each angle in an equilateral triangle?

• A
• B
• C
• D

Q18:

From a deck of cards that has a length of inches, you take two cards and lean them together to create an equilateral triangle. What is the height of the triangle?

• A inches
• B inches
• C inches
• D inches
• E inches

Q19:

In , if , then .

Q20:

In the figure below, is an equilateral triangle, , and . Find .

• A
• B
• C
• D

Q21:

In the figure below, is an equilateral triangle, , and . Find .

• A
• B
• C
• D

Q22:

In , if , then .

• A
• B
• C
• D

Q23:

Find the perimeter of .

Q24:

The area of an equilateral triangle is cm2. Find the side length.

Q25:

The area of an equilateral triangle is cm2. Find the side length.