Question

GEOMETRY! FIND THE VALUE OF X!

Answer 1

so if angle stu is 20 and so 4x+20=180

Answer 2

I thought STR was 20 and SRT b

Answer 3

there congruent so srt is also 20 but u need x so just solve for x with the equation of 4x+20=180 because a lines angle is 180 degrees

Answer 4

ohhhh!!! I get it!

Answer 5

thanks!!!

Answer 6

yeah :)

Answer 7

i need help on another one please

Answer 8

which problem

Answer 9

so to find the total angle added up in a pentagon is 180 * (n-2) and n is the number of sides. so the pentagon interior angles should add up to 540, so the missing angle is 107

Answer 10

why is it n-2 times? what is that?

Answer 11

thats how you find the total degrees in a polygon, so like squares add up to 360 and triangles add up to 180

Answer 12

but the answer in my book is 73

Answer 13

but you still have to subtract 180 by 107 to get 73 beacuse thats the inside angle you want the outside angle

Answer 14

ohhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

Answer 15

haha you get the hang of it once youve done it a couple times

Answer 16

yeah im still getting confused on like when to equal the two congruent triangles and when to set them to 180..can you explain that to me? like with diagrams....i have a benchmark tomorrow and i need to know...

Answer 17

what do youmean by equaling 2 congruent triangles? if they want a angle outside of the shape you have to subtract 180 because usually the angle you fins is the inside angle, but you want the angle that is on the other side of the line. (and lines are 180 degrees like right angles are 90 and circles are 360

Answer 18

ok so ill show you an example