Angles, polygons and parallel lines

Question 1 of 10

The sum of the interior angles of a 8-sided polygon is ___°.

Question 2 of 10

In a triangle, two interior angles are 42° and 62°. Find the exterior angle at the third vertex.

Question 3 of 10

The sum of the interior angles of a 20-sided polygon is ___°.

Question 4 of 10

An exterior angle of a triangle equals

Question 5 of 10

The base angles of an isosceles triangle are

Question 6 of 10

Find the sum of the interior angles of a polygon with 5 sides.

Question 7 of 10

A quadrilateral with only one pair of parallel sides is a

Question 8 of 10

Vertically opposite angles are supplementary.

Question 9 of 10

Find each interior angle of a regular polygon with 18 sides.

Question 10 of 10

The sum of the interior angles of a 10-sided polygon is ___°.