△LMN

is isosceles, with ∠M≅∠L
and m∠L=36°
. What are the measures of angles M
and N
?(1 point)

1 answer

In an isosceles triangle, two angles are equal. Since triangle \( \triangle LMN \) is isosceles with \( \angle M \cong \angle L \) and \( m\angle L = 36^\circ \), we can also conclude that:

\[ m\angle M = m\angle L = 36^\circ \]

Now, to find the measure of angle \( N \), we can use the fact that the sum of the interior angles of any triangle is \( 180^\circ \). Therefore, we have:

\[ m\angle L + m\angle M + m\angle N = 180^\circ \]

Substituting the known values:

\[ 36^\circ + 36^\circ + m\angle N = 180^\circ \]

Combining the measures of angles \( L \) and \( M \):

\[ 72^\circ + m\angle N = 180^\circ \]

Now, we can solve for \( m\angle N \):

\[ m\angle N = 180^\circ - 72^\circ = 108^\circ \]

Thus, the measures of the angles in triangle \( \triangle LMN \) are:

  • \( m\angle L = 36^\circ \)
  • \( m\angle M = 36^\circ \)
  • \( m\angle N = 108^\circ \)

In summary:

  • \( m\angle M = 36^\circ \)
  • \( m\angle N = 108^\circ \)