Sum of Angles in a 4 sided Figure
Angles
Sum of Angles in a 4 sided Figure
Name:_______________________( ) Date:___________
Class:_________
Proof 1:
Proof 2:
1.
A B 2.
A B
C D
C D
ÐACD = ÐADB = 57°
ÐBAC = 116°
ÐCDB = 123°
ÐACD = 64°
Find ÐBAC
ÐCDB = 116°
Find ÐABD.
3. 4. A B
A B
C D C D
ÐBDC = ÐBAC =145° ÐACD = ÐCDB = ÐDBA = 90°
ÐABD = 35° Find ÐBAC.
Find ÐBAD.
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