Posted by **nbvhj** on Monday, August 6, 2007 at 11:18am.

Prove the following: if, in a triangle ABC,BA =CB

O in atriangle

mÐ BAO = mÐ OAC = 20°,

mÐ ACO = 10°,

and mÐ OCB = 30°,

then mÐ OBC = 80°.

## Answer This Question

## Related Questions

- Mathamatics - O is any point on Diagonal DB OF Parallogram ABCD. Prove that Ar (...
- Mathamatics - OIS ANY POINT ON DIAGONAL DB OF PARALLOGRAM ABCD PROVE THAT, AR(...
- geometry - The medial triangle of a triangle ABC is the triangle whose vertices...
- math - Let P and Q be the points on the sides AB and BC of a triangle ABC ...
- geometry - Given AB is perpendicular to BC <ABO= (2x + y)degrees <OBC= (6x...
- maths - AD is the median of triangle ABC and G divides AD in the ratio 2:1 ....
- Math(Geometry) - In the diagram below(no diagram but details will be provided), ...
- Math - Which set of side lengths shows similar triangles? Triangle ABC : 40, 20...
- Geometry - Let ABC be any triangle. Equilateral triangles BCX, ACY, and BAZ are...
- maths - ABC is a triangle BD & CE are altitudes drawn from the vertex B & C. ...

More Related Questions