In the diagram above, EF intersects AB and CD at G and H, respectively. And GI is drawn such that GH is congruent to JH.

If measurement EGB is equal to 50 degrees and measurement DIG is equal to 115 degrees, explain why AB is parallel to CD?

Simply 8x squared + 5(7x squared- x) - 2x =

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?