Geometry Problem | Finding the Missing Angle | SAT Prep | Math Problem

[HiddenConspiracy]

He knew exactly what he was doing when he was making that angle

[dewetskywalker]

I'm self teaching myself geometry before i take actual geometry in school, so this is great to make sure I know the stuff. Thanks 👍
*Little update a year later...*

I am now self-studying calc 3, a college level course and I am just coming into my sophomore year when schools start again in August. My school isn't giving me any credit for this, I'm just doing it 😎

[varshakendre]

Triangle all sides addition is 180°.
95°+55°=150.
Hence, 180-150=30.
Correct Ans is opt B 30.

[dasdsarew]

I like how you put “lol” and that is what we need funny.

[venukrithish]

I loved these kinda sums in school. Im also happy that I was able to figure out in just few secs

[dreadhaisler]

You can also apply the Exterior Angles Theorem, which states that an exterior angle is equal to the sum of the nonadjacent angles of a triangle. Applying the Linear Pair Postulate 85° + x = 180, x= 95. Then applying the Exterior Angles Theorem, 125° = x + 95°, x = 30°.

[TheDunestrider]

I used to love taking geometry in high school (54 years ago). It was like solving puzzles.

[hay_]

U can also use
180-125=55
85-55=30 cuz exterior angles

[NE]

B) 30 degrees

1st 180 - 125 = 55
2nd 180 - 85 = 95
3rd 180 - (55 + 95) = 180 - 150 = 30

Thanks. May you and yours stay well and prosper.

[richarddoyle]

I love geometry.
The angle of the dangle....
The balls of this guy!

[xjoemama]

You could also follow the theorem that says: 'The external angle of a corner or a triangle that is created with the expansion of one of its sides, is equal to the sum of the two angles other than the one on that corner.

In other words 85° = x + 180° - 125° <=> x = 85° + 125° - 180° <=> x = 30°

[anisahayat]

You don't necessarily need to subtract at the end, you can just plug or based on common sense. 55+95+x=180, 55+95=150, therefore, plus 30 is equal to 180.

[startyourday]

you can also use it exterior angle property

[dwightstorie]

I remember this type of problem back in high school that was so difficult ....now 50 years later..not so much

[BadNews]

Geometry is my favorite. If you know the rules, it's so concrete.

[Thorschancesofbeatingsuperman]

I was pleased when I saw this, usually he has to answer it for me and im like, “oh shit that makes sense” but this one I got quick, first time I felt smart watching his vids

[ehe]

X+55°= 85° (Exterior angle property)
:. X=30°

[iCalculatorInfo]

Great video, very educational at all angles 😉🎉🔥

[cynthusinfinite]

I hated math in school, I couldn't comprehend the math after grade 10 but I excelled in languages. Now I love math. I love to exercise my brain.

[harrymatabal]

Good. Can also use exterior angle of triangle= sum of the 2 interior opposite angles