If a triangle has three sides a, b and C, what is the semicircle of that triangle?​

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?

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days

Percent increase and decrease. original number: 45 new number: 18