Answer:
See proof
Step-by-step explanation:
Statement Reason
1. and bisects - Given
2. - Definition of angle bisector
3. - Alternate interior angles theorem
4. - Substitution property
5. - Vertical angles are congruent
6. - AA Similarity postulate
7. - Definition of similar triangles
8. - Converse of base angles theorem
9. - Substitution property
The sum of the measures of angles in the polygon with n angles is
180°(n - 2)
We have an octagon → n = 8.
The sum of the measures of angles in an octagon is
180°(8 - 2) = 180°(6) = 1080°
The equation:
x + 139 + 140 + 125 + 116 + 152 + 2x + 143 = 1080
3x + 815 = 1080 <em>subtract 815 from both sides</em>
3x = 265 <em>divide both sides by 3</em>
<h3>x = 88 1/3</h3>
Asuuing yo meant (h,k)=(-5,1/2)
equation is
(h,k) is center and r=radious
given that (h,k)=(-5,1/2) and r=1
h=-5
k=1/2
if you wanted us to expand
x
²+y^2+10x-y+25.25=1
Answer:
0.375
Step-by-step explanation:
The two angles need to add to 180 degrees.
5a + 5. + 2a + 35 = 180
Combine like terms:
7a +40 = 180
Subtract 40 from both sides:
7a = 140
Divide both sides by 7:
a = 140 / 7
a = 20