2.
The 21 degree angle shown is a corresponding angle to angle 3, which means they are identical, so angle 3 is 21 degrees.
Angle 3 and 4 are supplementary angles which need to add up to 180 degrees.
Angle 4 = 180 - 21 = 159 degrees.
3. A bisector means both sides are the same length.
Set the two equations to equal to solve for x:
4x+12 = 2x +18
Subtract 2x from both sides:
2x +12 = 18
Subtract 12 from both sides:
2x = 6
Divide both sides by 2:
x = 3
Now you have x, solve both equations and add them together:
4(3) +12 = 12+12 = 24
2(3) +18 = 6+18 = 24
24 +24 = 48
AB = 48
Answer:
Polygons are 2-dimensional shape with straight sides. Normal polygons have sides and angles that are all the same. You can find the measurements of the exterior and interior angles of regular polygons but you can't with irregular polygons.
Answer:
5c
Step-by-step explanation:
a=2d +5r = 57
a
2d
5r
57
Answer:
10
Step-by-step explanation:
The LCM of 20 and 300 is 300.
<h3>How to find the LCM?</h3>
The multiple of 20 will be:
20 = 20, 40, 60, 80, 100, 120, 140, 160, 180, 200, 220, 240, 260, 280, 300
The multiple of 300 will be:
300 = 300, 600, 900
Therefore, the lowest common multiple of 20 and 300 is 300.
Learn more about LCM on:
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