Obtuse Angled Triangle

Q.

A triangle can have two obtuse angles. Say true or false.

1. True

2. False

Q.

How many obtuse angles can a triangle have?

1. One

2. Two

3. Three

4. None

Q.

The ratio between a base angle and the vertical angle of an isosceles triangle is 1:4. Find each angle of the triangle.

Q.

Find the unknown marked angles in the given figure:

Q.

Name the type of triangle:

$△LMN$ with $\angle L=30°$ , $\angle M=70°$ and $\angle N=80°$

Q. A triangle must have at least two ________.

1. acute angles
2. right angles
3. straight angles
4. obtuse angles

Q. In an obtuse triangle, what can be said about the remaining two angles that are not obtuse?

Q. Find the value of each angle in the given figures:

Q.

How many obtuse angles are there in a triangle?

Q. Which of the following is/are obtuse angled triangle(s)?

1. 
2. 
3. 
4. 

Q. How many obtuse angles does an obtuse angled triangle have?

1. 1
2. 3
3. 2
4. 0

Q. The angles of a triangle measure ${40}^{\circ }$, ${110}^{\circ }$ and ${30}^{\circ }$. Such a triangle is called a/an _____.

1. right angled triangle
2. isosceles triangle
3. obtuse angled triangle
4. acute angled triangle

Q. How many obtuse angles does an obtuse angled triangle have?

1. 0
2. 1
3. 2
4. 3

Q.

Which of the following triangles are isosceles as well as obtuse-angled triangles?

1. Fig 1 and Fig 3 only

2. Fig 1, Fig 2 and Fig 4 only

3. Fig 1, Fig 2 and Fig 3 only

4. Fig 2 and Fig 3 only

Q.

The six elements of a triangle are its ‘a’ sides and ‘b’ angles. Find the value of $a\times b$.

___

Q.

If the angles of a triangle are 30°, 30° and 120°, then the triangle is ___.

1. an obtuse angled triangle

2. a right angled triangle

3. a equilateral triangle

4. an acute angled triangle

Q. In $△$ ABC , $\overline{AB}$ =8.5 cm and $\overline{BC}$ = 9 cm. Which of the following is/are the correct information needed to construct the triangle?

1. $\angle$ A = 95°
2. $\angle$ C = 49°
3. $\overline{AC}$ =5 cm
4. $\angle$ B = 36°

Q. A triangle whose two angles measure ${25}^0$ and ${35}^0$ is a/an _________ triangle.

1. right angled
2. equilateral
3. obtuse angled
4. acute angled

Q. Atmost how many obtuse angle(s) can we have in a triangle?

1. 2
2. 1
3. 0
4. 3

Q.

The angles of a triangle measure ${40}^o$, ${110}^o$and ${30}^o$. Such a triangle is called a/an _________.

Q. Find the measure of angle $a$ in the given triangles without measuring

Q. In $△$ ABC , $\overline{AB}$ =8.5 cm and $\overline{BC}$ = 9 cm. Which of the following is/are the correct information needed to construct the triangle?

1. $\angle$ C = 49°
2. $\angle$ A = 95°
3. $\overline{AC}$ =5 cm
4. $\angle$ B = 36°