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There is no general formula. You need to measure it or else have a lot more information.

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11y ago
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Q: What is the formula to find the vertex angle?
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Related questions

how to find the vertex angle?

The vertex angle is connected to the vertex point


A base angle of an isosceles triangle is 6 degrees more than the vertex angle. Find the vertex angle?

56 degrees


What is the vertex of an angle?

the vertex of the angle is the point


What is the vertex of an angle called?

vertex angle


What is the vertex of the angle AED?

Angle E is the vertex.


What is the measure of the vertex angle of an isosceles triangle if one of the angles measure 58?

If the 58°-angle is one of the base angles, then the vertex angle is 64°.If the 58°-angle is the vertex angle, then the vertex angle is 58°.


How many vertices and angle does decagon have?

A vertex is the same as an angle. A decagon has 10.A vertex is the same as an angle. A decagon has 10.A vertex is the same as an angle. A decagon has 10.A vertex is the same as an angle. A decagon has 10.


What is the measure of an exterior angle adjacent to the vertex angle?

It is: 180-vertex angle = exterior angle


Does every angle have a vertex?

Every angle has a vertex. A vertex is simply the line through the center of each angle. The line splits the angle exactly in half.


How do you find the included angle?

The common vertex between two points


The equal angles of an isosceles triangle?

To find the equal angels, base angles, of an isosceles triangle and you know the vertex angle, 180-vertex angle and then divide by two.


What is the formula to find the sum of the measures of the exterior angles one at each vertex of a polygon?

If it's a regular polygon: 360/number of sides = each exterior angle