Question

Select the correct one from the following options.

• A. Figure 1 is an isosceles triangle.
• B. Figure 2 is a scalene triangle.
• C. Figure 3 is an equilateral triangle.
• D. None of the above

Answer 1

The correct option is A Figure 1 is an isosceles triangle.

Figure 1:
The two sides of the triangle are equal; each is equal to 9 inches. The other side of the triangle measures 7 inches.
As two sides are equal, the triangle is isosceles.

Figure 2:
All the sides of the triangle are equal, each measuring 9 inches.
As all sides are equal, the triangle is equilateral.

Figure 3:

All sides of the triangle are unequal.
So, the triangle is scalene.

∴ Only option (A) is correct.