# math hw help:name 2 straight angles each of which has its vertex at E?

name 2 pairs of opposite rays.

name 2 straight angles each of which has its vertex at E.

name 2 angles whose sum is <ABC

figure here:

### 3 Answers

- blueskiesLv 71 decade agoFavorite Answer
Opposite rays are two lines that share a common endpoint, and the two lines form a line...

Opposite rays are either 1) EA and EC.... or 2) EB and ED

Set 1).... EA and EC both share the same common endpoint E... and when you put EA and EC end to end, they form a straight line AC...

Set 2)... EB and ED both share the same common endpoint E... and when you put EB and ED end to end, they form a straight line BD

http://www.mathopenref.com/oppositerays.html

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This is what is meant by straight angles

( http://www.mathsisfun.com/geometry/straight-angle.... )

A straight angle is 180 degrees... so there are two straight angles that each have its vertex at E... they are... <AEC and <DEB.... Do you see that?

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2 angles whose sum is <ABC are.... <ABD and <DBC

Do you see that?

Hope this helped!!!

- birdwoman1Lv 41 decade ago
Two opposite rays are EC and EA. Another pair would be EB and ED.

Two straight angles with vertex E would be DEB and AEC.

Two angles whose sum is equal to ABC are the two angles that together form ABC. These would be ABE and EBC.

good luck!

- 1 decade ago
ef and ed opposite rays, lines that continue in 1 direction only

aeb and dec 2 angles with vertex(turning point) at E

adc and aeb m not sure bout the last 1

good luck :)