Angle Sum Property of Triangles

Q.

In a right-angled triangle, if one acute angle is ${45}^o$then the third angle is _________.

Q.

$△ABC$ is a right-angled triangle in which $\angle \mathrm{A}=90°$° and $\mathrm{AB}=\mathrm{AC}$. Find $\text{∠B}$ and $\angle C.$

Q. Sum of all the three angles of a triangle is .

1. $0^{\circ }$
2. ${180}^{\circ }$
3. ${360}^{\circ }$

Q. If we know the value of $\angle$A and $\angle$C, then we can find the value of $\angle$ABD.

1. False
2. True

Q. In $△$ XYZ , $\overline{XY}$ =6.3 cm and $\overline{XZ}$ = 7 cm. Which is the correct information needed to construct the triangle?

1. $\angle$ X = 85°
2. None of the above
3. $\angle$ Y = 50°
4. $\angle$ Z = 45°