297663
Mark \((\checkmark)\) against the correct answer: In a \(\triangle\text{ABC},\) If A - B = 33° and B - C = 18°, then \(\angle\text{B}=?\)
1 35°
2 45°
3 45°
4 57°
Explanation:
45° \(\text{In}\ \triangle\text{ABC}:\) A + B + C = 180° .....(i) Given, A - B = 33° A = 33° + B .....(ii) B - C = 18° C = B + 18° .....(iii) Putting the values of A and B in equation (i): B + 33° + B + B - 18° = 180° 3B = 180° - 15 \(\Rightarrow\text{B}=\frac{165^\circ}{3}=55^\circ\)
PRACTICAL GEOMETRY
297664
A solid that has two opposite identical faces and other faces as parallelograms is a:
1 Prism
2 Pyramid
3 Cone
4 Sphere
Explanation:
Prism Prism has two opposite identical faces and other faces as parallelograms. 1
PRACTICAL GEOMETRY
297665
In the Pythagoras property, the triangle must be ___________ .
1 Acute angled
2 Right angled
3 Obtuse angled
4 None of these.
Explanation:
Right angled
PRACTICAL GEOMETRY
297666
Mark \((\checkmark)\) against the correct answer. In the given figure, AOB is a straight line, \(\angle\text{AOC}=\text{(3x-8)}^\circ\), \(\angle\text{COD}=50^\circ\) and \(\angle\text{BOD}=\text{(x+10)}^\circ\). The value of x is:2
1 32
2 42
3 36
4 52
Explanation:
32 AOB is a straight line \(\angle\text{AOC}+\angle\text{COD+}\angle\text{DOB}=180^\circ\) 3x - 8° + 50° + x + 10° = 180° 4x = 180° + 8° - 50° - 10° 4x = 128° x = 32°
297663
Mark \((\checkmark)\) against the correct answer: In a \(\triangle\text{ABC},\) If A - B = 33° and B - C = 18°, then \(\angle\text{B}=?\)
1 35°
2 45°
3 45°
4 57°
Explanation:
45° \(\text{In}\ \triangle\text{ABC}:\) A + B + C = 180° .....(i) Given, A - B = 33° A = 33° + B .....(ii) B - C = 18° C = B + 18° .....(iii) Putting the values of A and B in equation (i): B + 33° + B + B - 18° = 180° 3B = 180° - 15 \(\Rightarrow\text{B}=\frac{165^\circ}{3}=55^\circ\)
PRACTICAL GEOMETRY
297664
A solid that has two opposite identical faces and other faces as parallelograms is a:
1 Prism
2 Pyramid
3 Cone
4 Sphere
Explanation:
Prism Prism has two opposite identical faces and other faces as parallelograms. 1
PRACTICAL GEOMETRY
297665
In the Pythagoras property, the triangle must be ___________ .
1 Acute angled
2 Right angled
3 Obtuse angled
4 None of these.
Explanation:
Right angled
PRACTICAL GEOMETRY
297666
Mark \((\checkmark)\) against the correct answer. In the given figure, AOB is a straight line, \(\angle\text{AOC}=\text{(3x-8)}^\circ\), \(\angle\text{COD}=50^\circ\) and \(\angle\text{BOD}=\text{(x+10)}^\circ\). The value of x is:2
1 32
2 42
3 36
4 52
Explanation:
32 AOB is a straight line \(\angle\text{AOC}+\angle\text{COD+}\angle\text{DOB}=180^\circ\) 3x - 8° + 50° + x + 10° = 180° 4x = 180° + 8° - 50° - 10° 4x = 128° x = 32°
297663
Mark \((\checkmark)\) against the correct answer: In a \(\triangle\text{ABC},\) If A - B = 33° and B - C = 18°, then \(\angle\text{B}=?\)
1 35°
2 45°
3 45°
4 57°
Explanation:
45° \(\text{In}\ \triangle\text{ABC}:\) A + B + C = 180° .....(i) Given, A - B = 33° A = 33° + B .....(ii) B - C = 18° C = B + 18° .....(iii) Putting the values of A and B in equation (i): B + 33° + B + B - 18° = 180° 3B = 180° - 15 \(\Rightarrow\text{B}=\frac{165^\circ}{3}=55^\circ\)
PRACTICAL GEOMETRY
297664
A solid that has two opposite identical faces and other faces as parallelograms is a:
1 Prism
2 Pyramid
3 Cone
4 Sphere
Explanation:
Prism Prism has two opposite identical faces and other faces as parallelograms. 1
PRACTICAL GEOMETRY
297665
In the Pythagoras property, the triangle must be ___________ .
1 Acute angled
2 Right angled
3 Obtuse angled
4 None of these.
Explanation:
Right angled
PRACTICAL GEOMETRY
297666
Mark \((\checkmark)\) against the correct answer. In the given figure, AOB is a straight line, \(\angle\text{AOC}=\text{(3x-8)}^\circ\), \(\angle\text{COD}=50^\circ\) and \(\angle\text{BOD}=\text{(x+10)}^\circ\). The value of x is:2
1 32
2 42
3 36
4 52
Explanation:
32 AOB is a straight line \(\angle\text{AOC}+\angle\text{COD+}\angle\text{DOB}=180^\circ\) 3x - 8° + 50° + x + 10° = 180° 4x = 180° + 8° - 50° - 10° 4x = 128° x = 32°
297663
Mark \((\checkmark)\) against the correct answer: In a \(\triangle\text{ABC},\) If A - B = 33° and B - C = 18°, then \(\angle\text{B}=?\)
1 35°
2 45°
3 45°
4 57°
Explanation:
45° \(\text{In}\ \triangle\text{ABC}:\) A + B + C = 180° .....(i) Given, A - B = 33° A = 33° + B .....(ii) B - C = 18° C = B + 18° .....(iii) Putting the values of A and B in equation (i): B + 33° + B + B - 18° = 180° 3B = 180° - 15 \(\Rightarrow\text{B}=\frac{165^\circ}{3}=55^\circ\)
PRACTICAL GEOMETRY
297664
A solid that has two opposite identical faces and other faces as parallelograms is a:
1 Prism
2 Pyramid
3 Cone
4 Sphere
Explanation:
Prism Prism has two opposite identical faces and other faces as parallelograms. 1
PRACTICAL GEOMETRY
297665
In the Pythagoras property, the triangle must be ___________ .
1 Acute angled
2 Right angled
3 Obtuse angled
4 None of these.
Explanation:
Right angled
PRACTICAL GEOMETRY
297666
Mark \((\checkmark)\) against the correct answer. In the given figure, AOB is a straight line, \(\angle\text{AOC}=\text{(3x-8)}^\circ\), \(\angle\text{COD}=50^\circ\) and \(\angle\text{BOD}=\text{(x+10)}^\circ\). The value of x is:2
1 32
2 42
3 36
4 52
Explanation:
32 AOB is a straight line \(\angle\text{AOC}+\angle\text{COD+}\angle\text{DOB}=180^\circ\) 3x - 8° + 50° + x + 10° = 180° 4x = 180° + 8° - 50° - 10° 4x = 128° x = 32°
1