Answer:
Explanation:
To construct triangle PQR, we need to follow these steps:
1. Draw a line segment PQ with a length of 7 cm.
2. Using a protractor, measure an angle of 30° at point P, starting from line segment PQ.
3. Mark the endpoint of the measured angle as point R.
4. Draw a line segment QR with a length of 5 cm, connecting points Q and R.
5. Complete the triangle by drawing a line segment PR, connecting points P and R.
To classify the triangle PQR, we can determine its properties based on the given information:
- PQ = 7 cm, QR = 5 cm: Since all three sides have different lengths, triangle PQR is a scalene triangle.
- LP = 30°: Since one angle measures 30°, we know that triangle PQR is not an equilateral or isosceles triangle.
In summary, triangle PQR is a scalene triangle.