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Quiz

Grade 7: Triangles and quadrilaterals

10 questions with solutions for grade 7: convex polygons, triangles, circumscribed and inscribed circles, angles in a quadrilateral, parallelograms.

Type the number or choose the right answer. When you finish, click Check answers and see the solutions.

1. Two angles of a triangle are 45° and 75°. How many degrees is the third?

2. An isosceles triangle has a 40° angle at the top. How many degrees is each base angle?

3. How many degrees is each angle of an equilateral triangle?

4. Can a triangle have sides 3 cm, 4 cm and 8 cm?

5. Three angles of a quadrilateral are 80°, 95° and 110°. How many degrees is the fourth?

6. One angle of a parallelogram is 65°. How many degrees is the next angle?

7. What is true of the diagonals of every parallelogram?

8. Which quadrilateral has all sides equal but no right angles?

9. A polygon with an interior angle greater than 180° is:

10. The centre of a triangle’s circumscribed circle is where these meet: