Posted by **chica** on Thursday, November 18, 2010 at 6:48pm.

Indirect Proofs

Prove a triangle cannot have 2 right angles.

1) Given triangle ABC.

2) Assume angle A and angle B are both right angles is true by one of two possibilities (it is either true or false, so we assume it is true)

This is my first time to do indirect proofs, so if someone can talk me through it so I can do the next problems by myself I would be greatful.

## Answer this Question

## Related Questions

- Math - Geometry - Two right triangles are touching at the tips. The left ...
- Geometry - Write an indirect proof that an obtuse triangle does not have a right...
- physics and geometry - ok proving that thest two angles are equal Gesh almost ...
- Math(Geometry) - In the diagram below(no diagram but details will be provided), ...
- Geometry - Writing indirect proofs. Can someone please check for me. I am not ...
- ALGEBRA 1 - If x and 3x-10 represent the measure of the acute angles of a right ...
- pls help w/t math ? - in a right triangle ABC, if ab is 14 and bc is 12 wut is ...
- Math - Write whether the statement is true or false. If false write a true ...
- 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...