1 Marks In Fig. 7, find out which two triangles are congruent.
B.
TH
D
G
A
ZE
Fig. 7​

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex

Find the percent error of the measurement 4 cm