△CDE∼△PQR

. m∠C=13°
, m∠D=65°
. What are the measures of angles P
, Q
, and R
?(2 points)
m∠P =

°
, m∠Q =

°
and m∠R=

°

1 answer

Since triangles \( \triangle CDE \) and \( \triangle PQR \) are similar (\( \triangle CDE \sim \triangle PQR \)), their corresponding angles are equal.

Given:

  • \( m\angle C = 13^\circ \)
  • \( m\angle D = 65^\circ \)

To find the measure of angle \( E \) in triangle \( CDE \), we can use the fact that the sum of the angles in a triangle is \( 180^\circ \):

\[ m\angle E = 180^\circ - m\angle C - m\angle D \] \[ m\angle E = 180^\circ - 13^\circ - 65^\circ \] \[ m\angle E = 180^\circ - 78^\circ = 102^\circ \]

Now that we have all the angles in triangle \( CDE \):

  • \( m\angle C = 13^\circ \)
  • \( m\angle D = 65^\circ \)
  • \( m\angle E = 102^\circ \)

Using the fact that corresponding angles in similar triangles are equal, we can now identify the angles in triangle \( PQR \):

  • \( m\angle P = m\angle C = 13^\circ \)
  • \( m\angle Q = m\angle D = 65^\circ \)
  • \( m\angle R = m\angle E = 102^\circ \)

Thus:

  • \( m\angle P = 13^\circ \)
  • \( m\angle Q = 65^\circ \)
  • \( m\angle R = 102^\circ \)

So the measures of angles \( P \), \( Q \), and \( R \) are:

  • \( m\angle P = 13^\circ \)
  • \( m\angle Q = 65^\circ \)
  • \( m\angle R = 102^\circ \)