Equal Angles Subtend Equal Sides

Q. Every isosceles triangle is also an equilateral triangle.

1. False
2. True

Q. All isosceles triangles are equilateral.

1. True
2. False

Q. Sides opposite to equal angles of a triangle need not be equal.

1. True
2. False

Q. If the angle of vertex of an isosceles triangle is 100∘, then the measure of a base angle equals .

1. ${40}^{\circ }$
2. ${80}^{\circ }$
3. ${20}^{\circ }$

Q. Angles opposite to the equal sides of an isosceles triangle are equal.

1. True
2. False

Q. In the adjoining figure the value of x is?

1. 29

Q. In $△ABC$, $AB=AC$ and $\angle B={40}^{\circ }$. What is the value of $\angle C$(in degree)?

1. 40

Q.

In the given isosceles triangle ABC, AB = AC, $\angle ABC$ = 70°. Find $\angle$ BAC.

1. ${50}^{\circ }$

2. ${40}^{\circ }$

3. ${60}^{\circ }$

4. ${45}^{\circ }$

Q. Find the value of x.

1. ${60}^{\circ }$

2. ${30}^{\circ }$
3. ${120}^{\circ }$
4. ${90}^{\circ }$

Q. $\Delta$ABC is the isosceles triangle where seg AB$\cong$ seg AC write two different congruent correspondences between the vertices, by which $\Delta$ABC is congruent to itself.