Consider three lines K, L and M intersecting at a point O as shown. Line K contains the points A and D, L contains the points B and E while M contains the points C and F. Show that if AB is parallel to DE and CB is parallel to FE, then AC must be parallel to DF. In this situation, the triangles ABC and DEF are said to be in perspective. A K B E L F M

In the figure below, AE and CF are perpendicular lines. C D A B E G F (a) Name two complementary angles. LCBE and LEBF LABG and ZEBG LABF and LDBE LGBF and LFBE CBD and LEBD (c) Name two vertical angles. CBD and LFBG ZABC and ZABG GBF and LFBE LABF and LDBE CBD and LFBD (b) Name two supplementary angles. LABC and CBD LABF and DBE ZABF and LFBE LABG and LEBD LABC and LABE

Iven CUnUitioNS. Ons. 2) The line passes through (42, 17) and is parallel to y = 6.

What is true about the parallelogram below. O a+a=b+b O a+b=180° O a+b=b+b O a = b E 20 H bo bo 40