ABCD is a parallelogram. Find the measure of angle A.
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Remember that consecutive angles are supplementary. In this case, C + D = 180 degrees.
i tried that but i did not get the answer
One of our other parallelogram rules tell us that opposite angels are congruent.
The question is asking for the measure of angle A. What angle, if we were to solve for, would give us the same angle as angle A?
angle c
Correct
Show me your work for solving those angles
how would I do that. cause i did it three ways and neither way is working
I'll show you.
As per what I said earlier. "In this case, C + D = 180 degrees." Angle C = 8x - 8 Angle B = 17x + 13 \[17x + 13 + 8x - 8 = 180\] Like terms \[25x + 5 = 180\] Subtract five from both sides \[25x = 175\] Divide both sides by 25 \[x = 7\]
Where do we go from here?
Or actually, is that what you were getting earlier?
okay I did it that way but got some numbers mixed up
It happens :) So what do we do next?
would we plug in x
In which expression
Keeping in mind, Angle A is what we are trying to solve for.
(8x-8)
Correct
so angle c is in congruent to angle a
so my answer is 48
Correct again!
Good job :)
thank you!
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