Grade 8 · Geometry
This quiz helps revise “Quadrilaterals” in Geometry for grade 8. It has 25 questions in five categories: Angle basics, Parallelograms, Rectangles and rhombi, Trapezoids, Algebra in geometry. Questions get harder as the points go up, from 100 to 500.
The 100- and 200-point questions are open here. The rest show only their first words, and there are no answers: all of that is in the game itself.
What is the sum of the interior angles of any quadrilateral?
Three angles of a quadrilateral are 72°, 88°, and 95°. Find the fourth angle.
All four interior angles…
In the gameThe angles of a…
In the gameThe angles of a…
In the game
One angle of a parallelogram is 112°. Find an adjacent angle.
Diagonal AC of a parallelogram is 30 cm, and O is the intersection of the diagonals. Find AO.
A parallelogram has perimeter…
In the gameOpposite angles of a…
In the gameAdjacent angles of a…
In the game
A square has side length 7 cm. Find its perimeter.
A rectangle has a diagonal of 22 cm. Find the distance from the diagonals' intersection to a vertex.
The two diagonals of…
In the gameA diagonal of a…
In the gameOne angle of a…
In the game
A trapezoid has bases of 10 cm and 16 cm. Find the length of its midsegment.
A trapezoid has a midsegment of 17 cm and one base of 12 cm. Find the other base.
A lower base angle…
In the gameThe diagonals of an…
In the gameA trapezoid has a…
In the gameThree angles of a quadrilateral are 85°, 95°, and 110°. Find the fourth angle.
Adjacent angles of a parallelogram are 2x+10° and 4x−10°. Find x.
A rhombus diagonal splits…
In the gameIn a rectangle, diagonals…
In the gameTwo angles of an…
In the gameAll 25 questions and the answers are in the game. Invite your class or friends with a link — guests need no account.