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The sum of the exterior angle and interior angle is 180°:
→ interior_angle + exterior_angle = 180
→ exterior_angle = 180° - interior_angle
In an equilateral triangle, each interior angle is 180° ÷ 3 = 60°
→ exterior_angle = 180° - 60° = 120°
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Alternatively:
The sum of the exterior angles of a polygon is 360°
For a regular polygon they are all the same size:
→ number_of_sides × exterior_angle = 360°
→ exterior_angle = 360° ÷ number_of_sides
An equilateral triangle is a regular polygon with 3 sides:
→ exterior_angle = 360° ÷ 3 = 120°
What else can I help you with?
What size is an internal angle of an equilateral triangle?
60o
What is the size of one angle in an equilateral triangle?
Each of the 3 angles in an equilateral triangle are 60 degrees.
What is the size of each angle of an equilateral triangle?
60 degrees
What size is the angle that you can find three times in an equilateral triangle?
60 degrees
What is the size of a angle in an equilateral triangle?
The internal angles of a triangle add up to 180 degrees so in an equilateral triangel each internal angle must be 60 degrees, as 3 x 60 = 180.
What size is an internal angle of an equilateral triangle?
60o
What is the size of one angle in an equilateral triangle?
Each of the 3 angles in an equilateral triangle are 60 degrees.
What si the size of each angle in an equilateral triangle?
it is 24,0000000
What is the size of each angle in an equilateral triangle?
60 degrees
What is the size of each angle in a equilateral triangle?
60 degrees
What is the size of each angle of an equilateral triangle?
60 degrees
What size is the angle that you can find three times in an equilateral triangle?
60 degrees
What triangular shape has All three sides the same length and all three angles the same size?
That's an "equilateral triangle". Each inside angle is 60 degrees.
What is the size of a angle in an equilateral triangle?
The internal angles of a triangle add up to 180 degrees so in an equilateral triangel each internal angle must be 60 degrees, as 3 x 60 = 180.
Are all sides equal on an equilateral triangle?
Yes the are all the same size. They are also the same angle.
What is the size of every angle in a equivarlent tryangle?
The size of the 3 interior angles of an equilateral triangle each measure 60 degrees
How many congruente angles does a triangle has?
If it is an equilateral triangle then it will have 3 equal angles If it is an isosceles triangle then it will have 2 equal angles plus another different size angle
