Geometry

When two lines intersect, how many pairs of vertically opposite angles are formed?

What is the supplement of $90^\circ$?

The complement of $30^\circ$ is:

If two parallel lines are cut by a transversal, the alternate interior angles are always ________.

Given $l \parallel m$ and a transversal $n$. If an angle is $130^\circ$, what is the measure of its linear pair angle?

If a transversal intersects two parallel lines, then the co-interior angles are:

If one angle of a triangle is $100^\circ$ and the other two are equal, find the measure of the equal angles.

In $\triangle STU$, if $\angle S = 40^\circ$ and $\angle T = 70^\circ$, then $\triangle STU$ is:

If an exterior angle of a triangle is $135^\circ$, find the sum of its interior opposite angles.

If $AD$ is the altitude to the base $BC$ in $\triangle ABC$, then $\triangle ABD$ is always a:

How many medians can be drawn from a single vertex of a triangle?

If the altitude of $\triangle ABC$ to base $BC$ is $6\text{ units}$ and the $Area = 24\text{ sq units}$, what is $BC$?

Pythagoras was a famous mathematician from which country?

In a right-angled triangle, the square of the hypotenuse is equal to the _____ of the squares of the other two sides.

If the legs of a right triangle are $21$ and $28$, find the hypotenuse.

If $\Delta ABC \cong \Delta XYZ$, and $BC = 5\text{ cm}$, then $YZ$ must be:

Two right-angled triangles are congruent by RHS if their ________ and one side are respectively equal.

If $\Delta ABC \cong \Delta QRP$, then side $BC$ corresponds to:

How many lines of symmetry does a regular nonagon (9 sides) have?

What is the order of rotational symmetry of a regular pentagon?

Which of the following is NOT a property of a regular polygon with $n$ sides?