Grade 8 review
Answers are for parents and teachers.
1
What is the sum of the interior angles of a convex 9-gon (degrees)?
1260
2
The distances from a triangle’s vertices to the points of tangency are 5, 6 and 7. What is the perimeter?
36
3
In an inscribed quadrilateral ∠A = 100°. How many degrees is ∠C?
80
4
What is the modulus of the vector →a(8; 6)?
10
5
Choose the topic you found most interesting in Grade 8 geometry and write why.
Free answer: name the topic and give your reason in your own words.