Given: AD BC and BCD ADC Prove. DE CE
Angles Segments Triangles Statements Reasons
ZADC
2BCD
LCBE
2CEB
DAE
ZDEA
LECD
LEDC
B
Reasons
Statements
✓ 1. AD ABC
✓ 2.2BCD 2 ZADC
1. given
2 given
Correct Assemble the next
statement

r(0,90)(x,y) . t(-5,0)

last option

step-by-step explanation:

∆def to ∆d"e"f"

- rotate 90 counterclockwise degrees

- then translated 5 to the left (x --> x - 5)

answer is the last option

answer: a.

step-by-step explanation: the answer is a. because, you need to converge the fractions to find a solution.

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.