Question

please answer as fast you people can ​

Answer 1

Answer:

Step-by-step explanation:

4. a) If the quadrilateral has three acute angles each measuring 80 degrees then the total of the three acute angles will be = 80 x 3 = 240

And since the sum of the 4 angles of the quadrilateral is equal to 360 degrees.

So 240 will be added to the 4th angle =

240 + 4th angle = 360 degrees

so the 4th angle will be = 360 - 240  

= 120 degrees

So the 4th angle will be 120 degree.

b) n=8

Each interior angle of an octagon = (2n-4/n) * 90 DEGREE

= (2*8-4/8) * 90 DEGREE = 12/8 * 90 DEGREE

= 3 * 45 DEGREE

= 135 DEGREE

HOPE IT HELPS YOU !!