Answer:
122°
Step-by-step explanation:
The formula for finding the sum of all angles in a polygon is:
(n-2) * 180°
n is the number of angles
Here n = 7, so the sum of all angles is
(7-2) * 180° = 900°
x = 900 - 128 - 130 - 120 - 115 - 145 - 140 = 122°
Make me the brainliest ;)
obtuse because 62 + 102 < 122
S
1.05 × 10^2
42+34+14=90
42 people are male
34 people study biology
14 males study biology (thats both)
