☰ Contents · Geometry

The trapezoid and the isosceles trapezoid

Lessons 10–11 · 2 lessons · A. A. Rahimqoriyev, M. A. To‘xtaxo‘jayeva. Geometry, Grade 8 (textbook for general secondary schools), revised 3rd edition. Yangiyo‘l Poligraf Servis, Tashkent, 2014
Answers are for parents and teachers.
1
In trapezoid ABCD (BC ∥ AD), ∠D = 84°. How many degrees is ∠C?
2
The bases of an isosceles trapezoid are 14 cm and 30 cm. How long is the shorter segment cut off the larger base by the altitude (cm)?
3
The bases of an isosceles trapezoid are 9 cm and 17 cm and a leg is 5 cm. What is the perimeter (cm)?
4
The angle at the larger base of an isosceles trapezoid is 70°. How many degrees is the angle at the smaller base?
5
Is a parallelogram a trapezoid? Answer using the definition.