The general method of solving any math problem is: Use the information you're
given to find the missing information.
Since you've mentioned the "missing angle", I'm going to assume that you know
the sizes of the other three. If I don't make some kind of assumption like that,
then it's totally impossible to work with your question, because you've said nothing
about what you do know about the quadrilateral.
Now, here's a characteristic that's true of ALL quadrilaterals: The four interior angles
of every quadrilateral always add up to 360 degrees.
Knowing that fact, and knowing the sizes of three of the angles, you can subtract them
from 360 degrees, and the remaining degrees all belong to the one missing angle.
When you add all four sides of a quadrilateral(all parallelograms are quadrilateral), It must equal 360 degrees. So what you do is you add up the three angles that are given, them subtract that sum from 360.
If it's a quadrilateral then the other 3 angles must add up to 335 degrees because a 4 sided quadrilateral contains 360 degrees
a square or a rectangle
the angle measures of a quadrilateral must equal 360 degrees so you add 80+140+55=275 then subtract from 360. the answer is 85
A square or a rectangle
The 4 interior angles of a quadrilateral add up to 360 degrees. 360-65-90-60 = 145 degrees which is the missing angle
Subtract 300 from 360.
The following are angles in a convex quadrilateral: Angle A = 80 degrees Angle B = 98 degree Angle C = 70 degrees What is the measure of the missing angle?
There is no specific limitation on any one angle of an inscribed quadrilateral.
When you add all four sides of a quadrilateral(all parallelograms are quadrilateral), It must equal 360 degrees. So what you do is you add up the three angles that are given, them subtract that sum from 360.
180 minus two known angle = missing angle. Use Pythagoras' theorem to find its missing side.
Use a protractor.
Add all angles together and minus from 360 degrees
Subtract the 3 known angles from 360 to find the 4th angle.
A quadrilateral has four angles. There is information on only three so there are infinitely many possible answers.
Share If each quadrilateral below is a rhombus, find the missing measures UV: 8 and WX=5?
If you are trying to find the missing angle of a triangle you do 180 degrees minus your two other angles. However if you are trying to find the missing angle of a quadrilaterals you do the same thing but with 360 degrees.