• Best of luck to the class of 2025 for their HSC exams. You got this!
    Let us know your thoughts on the HSC exams here

Plane Geometry Help (1 Viewer)

Timothy6340

Member
Joined
Oct 18, 2011
Messages
96
Gender
Male
HSC
2012
1) angle ACD=48 alt angles
angle CAD=48 (base angles = issos triangle)(since AD=DC)
therefore angle ADC=84( angle sum triangle)
2) AE/BE=DE/EC=3/4
angle AED=angle BEC (VERT opp)
therefore simillar 2 sides in ration and common angle
 

Dash8

Member
Joined
Mar 6, 2012
Messages
127
Gender
Male
HSC
2012
1) angle ACD=48 alt angles
angle CAD=48 (base angles = issos triangle)(since AD=DC)
therefore angle ADC=84( angle sum triangle)
2) AE/BE=DE/EC=3/4
angle AED=angle BEC (VERT opp)
therefore simillar 2 sides in ration and common angle
Ah, thanks so much...can't believe i didn't see that haha.

Anyone else care to answer the other questions??
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top