Posted by **suborna** on Tuesday, January 11, 2011 at 6:40pm.

in triangle abc angle c is 90.write a indirect proof that angle a is less than 90.

- geomatry -
**brian**, Tuesday, January 11, 2011 at 6:56pm
hey

## Answer this Question

## Related Questions

Geomatry - In triangle ABC, angle Bis five less than twice angle A and angle Cis...

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

geometry - Indirect proof given triangle ABC,<B is an obtuse angle prove ...

Geometry - Write an indirect proof that an obtuse triangle does not have a right...

Geometry - Given: in triangle ABC, angle B= 120 degrees Prove: angle A does not...

GEOMETRY (Angles) PLEASE - in triangle ABC, angle b is 5 more than twice angle A...

help math - In triangle ABC, points D,E,F are on sides BC,CA,AB respectively ...

Geometry - Please answer at least one . PLEASE 1. Triangle XYZ has a right ...

GEOMATRY - CONSTRUCT ANGLE ABC WHERE AB=AC=10cm AND BC=9cm .MEASURE AND WRITE ...

geometry - obtuse triangle ABC with obtuse angle B. Point D on side AC such that...