# mtbos iteachmath geometry proof math edtech triangle cevian incircle inradius exradius congruence measure parallelogram incenter midpoint altitude collinear

Here, we have a right triangle with its incircle, excircle, & points of tangency to be shown. How can we prove the collinearity among the 3 points (shown at the end)? (Source: ). https://t.co/CGNxP7i5Hz

16 32
2019-07-30

Problem 1267 Incircle, Excircle, Circle, Tangency Points, Perpendicular

Details: https://t.co/7j2bDCCv9S

3 3
2016-10-01