Answer
438k+ views
Hint:Right angled triangle : A triangle in which one angle is ${90^ \circ }$ and the rest of two angles are less that ${90^ \circ }$. Acute angled triangle : A triangle in which all angles are less than ${90^ \circ }$. Equilateral triangle : A triangle in which all the angles are ${60^ \circ }$.Using these definitions we check all the options.
Complete step-by-step answer:
As we know that the triangle is a three sided polygon it contains three angles .
From these three line and angle it is divided further Based on angles it is divided into three types ;
Acute angled triangle : The triangle in which all the three angles less than ${90^ \circ }$.
Obtuse angle triangle : The triangle in which one angle is greater than ${90^ \circ }$.
Right angle triangle : The triangle in which one angle is equal to ${90^ \circ }$.${60^ \circ }$
So in the question it is given that the one angle is equal to ${90^ \circ }$ and the other is an acute angle . So from the above theories we know if the one angle of the triangle is equal = ${90^ \circ }$ then it is known by Right angle triangle .
So, the correct answer is “Option A”.
Note:Based on side the triangle is further divided into three types
1) Scalene Triangle : In which all the sides are different in length .
2) Isosceles Triangle : In which the two sides of a triangle are equal and the third side is different in length .
3) Equilateral Triangle : In which all the sides are equal in length.In this triangle all the angles are ${60^ \circ }$.
Complete step-by-step answer:
As we know that the triangle is a three sided polygon it contains three angles .
From these three line and angle it is divided further Based on angles it is divided into three types ;
![seo images](https://www.vedantu.com/question-sets/4fe2eb98-d048-46e2-81de-815f353f6940728523201834688388.png)
Acute angled triangle : The triangle in which all the three angles less than ${90^ \circ }$.
Obtuse angle triangle : The triangle in which one angle is greater than ${90^ \circ }$.
Right angle triangle : The triangle in which one angle is equal to ${90^ \circ }$.${60^ \circ }$
So in the question it is given that the one angle is equal to ${90^ \circ }$ and the other is an acute angle . So from the above theories we know if the one angle of the triangle is equal = ${90^ \circ }$ then it is known by Right angle triangle .
So, the correct answer is “Option A”.
Note:Based on side the triangle is further divided into three types
1) Scalene Triangle : In which all the sides are different in length .
2) Isosceles Triangle : In which the two sides of a triangle are equal and the third side is different in length .
3) Equilateral Triangle : In which all the sides are equal in length.In this triangle all the angles are ${60^ \circ }$.
Recently Updated Pages
Mark and label the given geoinformation on the outline class 11 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
When people say No pun intended what does that mea class 8 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Name the states which share their boundary with Indias class 9 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give an account of the Northern Plains of India class 9 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Change the following sentences into negative and interrogative class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Advantages and disadvantages of science
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Trending doubts
Bimbisara was the founder of dynasty A Nanda B Haryanka class 6 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Which are the Top 10 Largest Countries of the World?
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
10 examples of evaporation in daily life with explanations
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give 10 examples for herbs , shrubs , climbers , creepers
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
How do you graph the function fx 4x class 9 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference Between Plant Cell and Animal Cell
![arrow-right](/cdn/images/seo-templates/arrow-right.png)