Friday

December 19, 2014

December 19, 2014

Posted by **DANIELLE** on Tuesday, June 12, 2007 at 1:14pm.

Prove: angle A does not= 60 degrees

Plan: use indirect proof

Assume temporarily that Measure angle A = 60. Then measure angle C=60,

and measure angles A+B+C=180= 60+B+60=180. Therefore the temporary assumption that measure angle A=60 is false. It fallows that measure angle A does not equal 60 degrees.

excellent.

**Answer this Question**

**Related Questions**

Geometry - Writing indirect proofs. Can someone please check for me. I am not ...

Algebra - In triangle ABC, the measure of angle B is 8 degrees more than three ...

Geometry - In the triangle ABC, the measure of angle A=(5x+3)degrees, the ...

Geometry - ABC is an acute angle triangle with points D and E on BC and AC, ...

Geometry - ABC is an acute angle triangle with points D and E on BC and AC, ...

ALGEBRA - In triangle ABC, the measure of angle B is 27 degrees more than three ...

Geometry HELP!! - I need help with my geometry hw, i need to now wat the ...

math - in a triangle, the measure of the first angle is twice the measure of the...

College Math - In a certain triangle the measure of one angle is triple the ...

Geometry HELP!! - I need help with my geometry hw, i need to now wat the ...