Jojo823 Jojo823

03-11-2017
Mathematics

contestada

find CDE, if BAC=50 and BCA Is a right angle.
a) 40
b) 50
c) 90
d) 180

find CDE if BAC50 and BCA Is a right angle a 40 b 50 c 90 d 180 class=

Respuesta :

mathstudent55 mathstudent55

03-11-2017

Because of the two sets of parallel lines, two pairs of corresponding angles are congruent, and the triangles are similar.

Since m<BAC = 50, then m<DCE = 50.

mBCA = 90, and m<DEC = 90

m<DCE + m<DEC + m<CDE = 180

50 + 90 + m<CDE = 180

m<CDE = 40

Answer Link

Otras preguntas

Can someone tell me what this says?

Which statement best describes nativist views in the late 1800s

The perimeter of a regular octagon is 24a + 48 inches.(a) write an expression for the length of any one side of the octagon. The perimeter of a regular octagon

A rectangle is 3 feet 8 inches wide and 1 yard 2 feet 10 inches long. How much longer is the length than width in inches?

oblicz ułamki 2/8=.../4

In a chess match, a win counts as 1 point, a draw counts as 0.5 point, and a loss counts as 0 points. After 21 games between the two players, the winner was 8 p

The functions f(x) and g(x) are defined below. f(x) = -2x -6 g(x) = x^2 + 4x -1 By graphing, determine where f(x) = g(x). A. x = -3 ; x= -6 B. x= -5 ; x=1 C. x

How do I explain percentages to a young person

describe more than one side of a difficult situation you may have faced?

How do I solve this