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Pavel [41]
3 years ago
12

Geometry help!! How did they get this answer?

Mathematics
1 answer:
Illusion [34]3 years ago
4 0

The sum of all the angles in a triangle is 180 degrees. The triangle in the picture is also an equilateral triangle because of the markings on it (the three arches and ticks show that the sides with the markings are congruent.)

So since an equilateral triangle has 3 angles and the angles are congruent, we can divide 180 by 3 to find out how many degrees each angle is; 60 degrees.

Since all angles are equal, angle A = angle B = angle C = 60 degrees.

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3 years ago
1+16=14+2 is this true or false
il63 [147K]

Answer:

False

Step-by-step explanation:

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7 0
3 years ago
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amid [387]

Answer:

40.3

Step-by-step explanation:

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3 years ago
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Need help with this geometry question, solving for x and please explain the formula for this
Alborosie
Alright, so what we can take as a given is that arcDE/2= ∠CDE=2x+20 since the arc corresponding to the angle is 2*the angle. To solve for arcDE, we multiply both sides by 2 to get 2(2x+20)=4x+40=arcDE. Since the arcs in a circle add up to 360 degrees and we only have -20+30x and arcDE, we have -20+40+4x+30x=360 using the associative property. Simplifying, we get 20+34x=340. Subtracting 20 from both sides, we get 340=34x. Next, we can divide both sides by 34 to get 10=x. 
3 0
3 years ago
A, B, C, or D please and ty
cupoosta [38]

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Step-by-step explanation:

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3 0
3 years ago
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