Dat circle geo (2 Viewers)

[Spiritual Being]

Circle geometry is about what you see.

Thankfully I saw it today.

Expecting 63/70 raw.

 

[Web Addict]

+1 It's valid because you prove they're equal angles and THEN you state well since they're equal, they must be vertically opposite. Hence straight line.

Cool. Thanks.

 

[superSAIyan2]

is this right? I dont think ive made any assumptions about QTP being straight

 

[RealiseNothing]

is this right? I dont think ive made any assumptions about QTP being straight
View attachment 28953

Looks right.

Made my neck a bit sore though.

 

[panda15]

is this right? I dont think ive made any assumptions about QTP being straight
View attachment 28953

Yep. That's the solution I put in the exam.

 

[Menomaths]

Looks right.

Made my neck a bit sore though.

His neat writing compensated for it though.

 

[Storm Red]

I drew a line through Q, T and P, and proved that the two triangles (BQT and APT) are congruent (angles in the same segment and vert. opposite angles). And as they lie on the line, the points had to be collinear. Hope its right

 

[RealiseNothing]

I drew a line through Q, T and P, and proved that the two triangles (BQT and APT) are congruent (angles in the same segment and vert. opposite angles). And as they lie on the line, the points had to be collinear. Hope its right

The triangles aren't congruent. Unless you mean similar, which assumes the result.

 

[superSAIyan2]

His neat writing compensated for it though.

Thanks!! And thanks to others for verifying my answer

 

[pHyRe]

reckon you'd get a mark for doing it by assuming it was a straight line for stating alternate angles on the one that is given as a line?