Answer:
sorry that hard a only in 5th grade
9514 1404 393
Explanation:
Here's one way to go at it.
Draw segments AB and CO. Define angles as follows. (The triangles with sides that are radii are all isosceles, so their base angles are congruent.)
x = angle OAB = angle OBA
y = angle OAC = angle OCA
z = angle OBC = angle OCB
Consider the angles at each of the points A, B, C.
At A, we have ...
angle CAB = x + y
At B, we have ...
angle CBA = x + z
At C, we have ...
angle ACB = y + z
The sum of the angles of triangle ABC is 180°, as is the sum of angles in triangle ABO. This gives ...
x + x + ∠AOB = (x+y) +(x+z) +(y+z)
∠AOB = 2(y+z) = 2∠ACB
This shows ∠AOB = 2×∠C, as required.
-23……………,,,,,…,,,,.,,,,,,,,,,,,,,,
Answer:
epresented on the horizontal axis and elevation on the vertical axis. For each situation, decide if the ... (from Unit 3, Lesson 4). 4. Each square on a grid represents 1 unit on each side. Match the numbers with the slopes of the lines. 1. - 7 / 1. C.
Step-by-step explanation:
