# Types of Triangles Based on Angles

## Trending Questions

**Q.**

What type of triangles are formed by a diagonal of a parallelogram?

Right triangles

Isosceles triangles

Scalene triangles

Equilateral triangles

**Q.**An

- acute-angled
- obtused-angled
- reflex-angled
- right-angled

**Q.**

What is the maximum number of acute angle/s a triangle can have?

0

1

2

3

**Q.**If all the angles of a triangle are less than 90∘ , then it is called

- acute-angled
- right-angled
- obtuse-angled

**Q.**

A circle drawn inside a triangle such that it touches all the three sides of the triangle is called

**Q.**

Name the type of triangle:

$\u25b3PQR$ with $PQ=QR=PR=5cm$.

**Q.**

Shreya measured the angles of a triangle which came out to be 60°, 50°, and 70° respectively. Now she wants to know what type of triangle it is.

Can you tell what type of triangle it is?

Acute angled triangle

Obtuse angled triangle

Right angled triangle

Reflex angled triangle

**Q.**How to draw regular pentagon & hexagon symmetry?

**Q.**

Question 1 (f)

Name the type of the following triangle:

ΔLMN with ∠L=30∘, ∠M=70∘ and ∠N=80∘ .

**Q.**

Question 1 (d)

Name the type of the following triangle:

ΔDEF with ∠D=90∘

**Q.**

Question 3 (a)

Name the following triangle in two different ways: (You may judge the nature of angle by observation)

**Q.**A triangle whose sides are 3cm, 3cm and 2cm is a/an

- isosceles
- equivalent
- scalene
- equilateral

**Q.**

Fill in the following blanks :

A triangle has ________ sides and _________ interior angles.

**Q.**

Question 3 (d)

Name the following triangle in two different ways: (You may judge the nature of angle by observation)

**Q.**

Question 1 (e)

Name the type of the following triangle:

ΔXYZ with ∠Y=90∘ and XY = YZ

**Q.**An obtuse triangle has :

- two obtuse angle.
- at least one obtuse angle.
- exactly one obtuse angle.
- atmost three obtuse angles.

**Q.**

State whether the following statement is true or false.

If one angle of a triangle is less than 90 degrees, it is known as an acute-angled triangle.

True

False

**Q.**

State whether the following statement is true or false.

If one angle of a triangle is greater than 90 degrees, it is known as an obtuse-angled triangle.

True

False

**Q.**

The measures of angles of triangle $56\xb0,48\xb0,76\xb0$ is an acute angled triangle.

- True
- False

**Q.**

A triangle with side lengths as 5 cm, 5 cm, 8 cm can be classified as ___________ triangle.

- a scalene
- an isosceles
- a right-angled
- an equilateral

**Q.**

State whether the following statement is true or false.

If one angle of a triangle is less than 90 degrees, it is known as an acute-angled triangle.

False

True

**Q.**

An obtuse-angled triangle is one in which all the angles are less than 90°. State true or false.

- True
- False

**Q.**

An obtuse-angled triangle is the one in which all the angles are less than 90°. State true or false.

- True
- False

**Q.**

In △ABC, ∠ABC = 90∘, ∠BAC = 45∘, ∠ACB = 45∘. What is this triangle called?

Right angled triangle

Isosceles triangle

90

^{o}triangleRight angled Isosceles triangle

**Q.**If the angles of a triangle are 60°, 50°, and 70°, then it is

- Acute angled
- Obtuse angled
- Right angled
- Reflex angled

**Q.**Let A, B, C be angles of triangle ABC with vertex A (4−1) and x−1=0 and x−y−1=0 are internal angle bisectors through B and C respectively. Let D, E, F be points of contact of sides bisector of A, B, C, then equation of circumcircle of triangle DEF is

- (x−1)2+y2=5
- x2+y2=25
- x2+(y−1)2=25
- (x−1)2+(y−1)2=5

**Q.**

An obtuse-angled triangle is one in which all the angles are less than 90°

- True
- False

**Q.**

Shreya measured the angles of a triangle which came out to be 60°, 50°, and 70°. Find the type of the triangle.

Reflex angled triangle

Right angled triangle

Obtuse angled triangle

Acute angled triangle

**Q.**

The measure of sides of triangle $3cm,3cm,2cm$is an isosceles triangle.

- True
- False

**Q.**Sita got a wooden square plate and cut it diagonally, as shown in the figure below. After cutting it, she saw that two triangles are formed.

Can you tell what type of triangles are formed?

Equilateral

Isosceles

Scalene

Can't be determined