☰ Contents · Geometry

Median, altitude, bisector. SAS criterion

Lessons 21–22 · 2 lessons · Geometry Grade 7, corrected and expanded 3rd edition. Yangiyo‘l Poligraf Servis, Tashkent, 2017 (approved by the Ministry of Public Education)
Answers are for parents and teachers.
1
In △ABC, BM is a median and AC = 30 cm. Find MC (cm).
2
In △ABC, BL is a bisector and ∠ABC = 76°. Find ∠LBC (degrees).
3
△ABC = △MNK, AB = 9, BC = 12, AC = 15. Write MN, NK, MK.
4
State the SAS criterion in your own words.
5
Make a paper triangle (with an adult) and fold its three medians. How many pass through one point?