Forgot password? New user? Sign up

Existing user? Log in

We have four sticks with length $2$ and two with length $a$, if we connect their end points to make a tetrahedron so that its opposite edges are respectively equal ...

What is the ratio of the Blue area to the Yellow area to the Red area?

How it's made: A quarter-circle is constructed. A semi-circle is constructed on the ...

It is easy to see that if two sides of a triangle are equal (i.e. if the triangle is isosceles), then the corresponding angle bisectors are equal as well ...

$ABCDE$ is a regular pentagon . $A'B'C'D'E'$ is the pentagon inscribed in $ABCDE$'s diagonals.

Find similarity ratio of $ABCDE$ to $A'B'C'D'E'$.

There are four equilateral triangles shown in the figure. The number within each equilateral triangle represents its area.

What is the area of the yellow triangle?

Problem Loading...

Note Loading...

Set Loading...