# NCERT Class 7 Mathematics Solutions: Chapter 10 –Practical Geometry Exercise 10.4 Part 1

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1. Construct, given

Answer:

**To construct:** where , and .

**Steps of construction:**

(a) Draw a line segment .

(b) At point , draw an angle with the help of compass.

(c) At point , draw an angle with the help of compass.

(d) and intersect at the point .

It is the required triangle .

2. Construct if

Answer:

We know that sum of angles of a triangle is

**To construct:** where , and .

**Steps of construction:**

(a) Draw a line segment .

(b) At point , draw an angle with the help of compass.

(c) At point , draw an angle with the help of compass.

(d) and intersect at the point .