Given:
In the given circle O, BC is diameter, OA is radius, DC is a chord parallel to chord BA and 
.
To find:
The 
.
Solution:
If a transversal line intersect two parallel lines, then the alternate interior angles are congruent.
We have, DC is parallel to BA and BC is the transversal line.
[Alternate interior angles]
In triangle AOB, OA and OB are radii of the circle O. It means OA=OB and triangle AOB is an isosceles triangle.
The base angles of an isosceles triangle are congruent. So,
[Base angles of an isosceles triangle]
Using the angle sum property in triangle AOB, we get
Hence, the measure of angle AOB is 120 degrees.
Answer:
ooooooooooooo more help...
Step-by-step explanation:
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Answer: 74 ft
12+12+15+15= 74
Perimeter is the distance around sometime
Step-by-step explanation:
step 1. the standard form of a quadratic equation is f(x) = ax^2 + bx + c
step 2. since they are all in standard form you need to provide more information.
Answer:
27!!! I understand it!
Step-by-step explanation:
Monday: 1 , 2 (Anthony and his 2 friends)
They EACH invited two friends!
Tuesday: Anthony: 2 Friend 1: 2 Friend 2: 2
The same!!
Wednesday: A: 2 F1: 2 F2: 2
THE SAME AGAIN!
Thrusday: A: 2 F1: 2 F2: 2
THE SAME AGAIN!!
Friday: A: 2 F1: 2 F2: 2
1 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 = 27
Hope it helps!!
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