Grade 12 Euclidean Geometry Exam question # 2

Try this Euclidean Geometry Exam question which has a combination of grade 12 Proportionality and grade 12 Similarity.
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[@Boy...207]

15 October 2024 time 01:38 pulling an all nighter

[@HeartfeltHarmoniez]

I think you made a mistake saying FDB instead of ADB for question 2

[@kevinmathscience]

For the 90 degree angle part?

[@HeartfeltHarmoniez]

@@kevinmathscience yes sir

[@KelebogileJaydelenKekana]

Yeah not me scrolling through the comment section to see if I was right or wrong
But Ye I Also Noticed That Mistake

[@VanessaMapurunyane]

For question 2 on the part(7:51) isn't it suppose to be triangle ADB instead of triangle FDB that is equal to 90°?

[@yalobeko7978]

Thank you sir

[@lindokuhlemolefe471]

i struggle with this topic so much

[@leticiamaloy2326]

sir how can the 5 just stay at the bottom? isnt it like... multiplied by the AC so it must stay together at the 5AC mustn't it?

[@AndisoNdaba]

You can cross multiply 5AC and AC and you will get 5AC²=FD.AD ,but we want AC² alone then u will have to divide by 5 both sides And in that way u end up with AC²=FD.AD

[@quadkambarran3169]

sir can we name the triangles how ever we want when we state that they are similar ( but as long as we keep the order the same )

[@kevinmathscience]

Yes :) You choose the first triangle however you want, then make sure the second one is matched to that :)

[@howtoget749]

is it wrong to multiply the 5 aswell and say 5AC^2 then divide both sides by 5?

[@wonderfulwhys88]

HI...for the 3rd point for number 1, can we say angles in the same segment??

[@they.luvfhatu_2245]

Sir what if I say F=F (common)

[@they.luvfhatu_2245]

@@Tutor4STEM oh yeah I get it now

[@themadman54]

Can anyone please tell me why Keven only multiplied AC and not with 5?

[@ziyandamajubana8536]

He did multiply by 5 as well ( He didn't show it on his workings though)
Hence why he divided by 5. In order to remove it from the left to make AC the subject

[@themadman54]

@@ziyandamajubana8536 ooh, it make sense now. Thank you