EXERCISE

In a $∆DEF, \angle E=70°$ and $\angle F=60°$.The bisector of $\angle F$meets $DE$ in $G$. Find $\angle DGF$ and $\angle EGF$ respectively.

What is the measure of each angle of an equilateral triangle?

In a ∆XYZ, if $\angle X = 90° and \angle Z = 48°$, find ∠Y.

How many lines of symmetry are there in equiangular triangle?

One angle of a triangle has the measure $80°$ and the other two angles are equal. Find the measure of these two angles.

The angles of a triangle are in the ratio $3:5:10$. Find the measure of each angle of the triangle.

One of the exterior angles of a triangle is $80°$ and the interior opposite angles are in the ratio $3:5$. Find the angles of the triangle.

The diagonals of a rhombus are $6 \mathrm{cm}$ and $8 \mathrm{cm}$. Find the length of a side of the rhombus.