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The fourth exterior angle is 93 degrees so the fourth interior angle must be 87 degrees because there are 180 degrees on a straight line.

Q: An irregular quadrilateral has exterior angle measures of 93 85 and 89 what is the measure of the fourth interior angle?

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A 4 sided quadrilateral has interior angles that add up to 360 degrees and its exterior angles add up to 360 degrees

Hint: in a regular polygon interior plus exterior = 180o, always.

1 a circle 360 interior angles 360 exterior agles

Each exterior angle measures 20 degrees Each interior angle measures 160 degrees

Measures of what? The interior angles, the exterior angles, the lengths of sides?

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360 degrees

A 4 sided quadrilateral has interior angles that add up to 360 degrees and its exterior angles add up to 360 degrees

I'm not sure if you mean interior or exterior angles, so I'll give you an answer for both.For interior angles:The sum of the measures of the *interior* angles of a quadrilateral is always 360 degrees. To understand why this is true, recall that the sum of the interior angles of a triangle is 180 degrees. Now, in any quadrilateral, we can draw a diagonal, splitting it into two triangles.So, the sum of the interior angles of the quadrilateral will be the sum of all of the interior angles of the two triangles, in other words, 2x180.In general, an n-gon can be divided into n-2 triangles, so the sum of the interior angles of an n-gon is 180x(n - 2) = 180xn - 360For exterior angles:The sum of the exterior angles of any closed, convex figure will be 360 degrees. So, if the quadrilateral is convex (isn't bent inwards) the sum of the exterior angles will be 360 as well.

Interior: 140 Exterior: 40

Exterior angle measures 18 degrees Interior angle measures 162 degrees

360

Hint: in a regular polygon interior plus exterior = 180o, always.

The 4 interior angles of a quadrilateral add up to 360 degrees

1 a circle 360 interior angles 360 exterior agles

180

Any irregular polygon can have an exterior angle measuring 60 degrees.Any irregular polygon can have an exterior angle measuring 60 degrees.Any irregular polygon can have an exterior angle measuring 60 degrees.Any irregular polygon can have an exterior angle measuring 60 degrees.

Each exterior angle measures 20 degrees Each interior angle measures 160 degrees