☰ Contents · Geometry

Practice and the Chapter IV test

Lessons 53–54 · 2 lessons · B. Xaydarov, E. Sariqov, A. Qo‘chqorov. Geometry, Grade 9 (textbook for general secondary schools), revised 4th edition. Huquq va Jamiyat Publishing, Tashkent, 2019
Answers are for parents and teachers.
1
The projections are 5 and 20. What is the area of the triangle?
2
R = 10, p = 8 (P inside), AP = 6. Find PB.
3
What is the tangent length to a circle of radius 8 from a point 17 from the centre?
4
Parallel lines cut an angle's sides: AB = 4, CD = 10, A₁B₁ = 6. Find C₁D₁.
5
Why is the tangent length √(p² − R²)?