A quadrilateral has three acute angles measuring 800
each. What is the measure of fourth angle.
PLZ DO STEP BY STEP EXPLANATION
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Answers
Answered by
11
Let the four angles be ∠A,∠B,∠Cand∠D
Given ∠A,∠B,∠C=75
o
By property of quadrilaterals , we know
∠A+∠B+∠C+∠D=360
o
⇒∠D will be given by
∠D=360−∠A−∠B−∠C
⇒∠D=360−75−75−75
⇒∠D=360−225
⇒∠D=135
The measure of fourth angle is 135
o
solution
Answered by
0
Answer:
120 degree
Step-by-step explanation:
As I understand All three acute angles measuring 80 degree each.
total measure of all four angles are 360 degree so the measure of the 4th angle= 360 - 80*3
=360- 240
=120 degree
ans.120 degree
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