Question

I need help please!!!!

Answer 1

Questions here.

Answer 2

@mathmale he needs your help

Answer 3

@welshfella

Answer 4

triangle ABC is isosceles because AB = AC ( 2 radii)
Therefore CE = BE ( because triangle ABC is isosceles and AE is perpendicular to BC.)

Answer 5

Ok

Answer 6

I guess you need a 2 column proof but im not too good at those. I never learned that in the UK.

Answer 7

If you join C to D and B to D . the triangle CDB becomes isosceles because ED is the perpendicular bisector of CB.
Therefore CD = BD.

Answer 8

So is that the first answer?

Answer 9

No thats the last One we've done the 2 parts.

Answer 10

So they both are the answers?

Answer 11

we've proved that BE = CE and also CD = BD.

Answer 12

Algebra in UK and US are very similar, Geometry is not.

Answer 13

Oh ok.

Answer 14

AC= AB = radius = R

AE is shared by triangles: ACE and ABE,

Angle AEC = Angle AEB = 90 degrees

Therefore, ACE and ABE are congruent via SAS rule. (Side, Angle, Side)

Therefore CE and EB ; Sides of triangles ACE and ABE respectively, are the same

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Angles CAE and BAE are the same as triangles ACE and ABE are congruent. Assume angles CAE/BAE = x

The arc length of a fraction of a circle = radius * x, where x is the angle in radians

CD = x*radius

BD = x*radius

Therefore CD and BD are equal.

Answer 15

Is this somewhat right?

Answer 16

In US geometry there are different labels for postulates and theorems.

Answer 17

Yes - except the reasons will probably have different labels.

Answer 18

Ok so i just put what i did?

Answer 19

well I would try and put it into a 2 column proof

Answer 20

I'm sure you'll get some credit for it.