Question

laliswer.
iii.
A triangle has two sides measuring 12cm and one side measuring 18cm. What
type of triangle it is?
a. equilateral b. Isosceles c. Acute
d. Obtuse
A triangle has its three sides measuring 7mm.What type of triangle is it?
a. Right b. Equilateral c. Acute d. Obtuse
A triangle has angles measuring 26, 130°,24° .What type of triangle is it?
a. Obtuse b. Isosceles c. Right d. Acute
iv. A triangle has angles measuring 23°,69° ,88°. What type of triangle is it?
a. Isosceles b. Obtuse
c. Acute
d. Right
v. A triangle has one angle = 90° and other two angles equal to 40 and 50.What
type of triangle is it?
c. Acute
b. Obtuse
d. Right
a. Equilateral​

Answer 1

Answer:

(i) Isosceles triangle

Because it's two sides are equal.

(ii) Equilateral triangle

Because it's all sides measure is 7 mm.

(iii) Obtuse triangle

Because it's one angle is of 130°.

(iv) Acute triangles

Because it's all angles measure is less than 90°.

(v) Right angle triangle

Because it's one angle measure is 90° and other two angles are acute angles.

More about triangles:-

Triangles are polygons which consists of three sides and three angles. Sum of all angles of triangle is equal to 180°.

Types of triangles based on sides :-

1. Equilateral triangle :- In this triangle all sides are equal and all angles are equal to 60°.
2. Isosceles triangle :- In this triangle two sides are equal and two angles are equal.
3. Scalene triangle :- In this triangle all angles and sides of triangle are unequal.

Types of triangles based on angles :-

1. Acute triangle :- In this triangle all angles are less than 90°.
2. Right angle triangle :- In this triangle one angle is of 90° and other two angles are acute angles.
3. Obtuse triangle :- In this triangle one angle is of more than 90°.

Answer 2

Answer:

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❶ A triangle has two sides measuring 12 cm and one side measuring 18 cm.

➥ Answer) Isosceles Triangle.

Because, two sides are measuring 12 cm and other sides measuring 18 cm.

Isosceles Triangle - An isosceles triangle is a triangle with two equal sides. Also the angle opposite to the two equal sides are also congruent.

❷ A triangle has its three sides measuring is 7 cm.

➥ Answer) Equilateral Triangle

Because, all sides are measuring 7 cm.

Equilateral Triangle - An equilateral triangle is a triangle which has all three of its sides are in equal length.

❸ A triangle has angle measuring 26°, 130°, 24°.

➥ Answer) Obtuse angled triangle

Because, it's one angle is more than 90°.

Obtuse angled triangle - A obtuse angled triangle is a triangle in which one of the interior angle measure than 90°.

❹ A triangle has angle measuring 23°, 69°, 88°.

➥ Answer) Acute angled triangle

Because, it's one angle is less than 90°.

Acute angled triangle - An acute angled triangle is a type of triangle in which all the internal angle of the triangle are acute, and its is measure less than 90°.

❺ A triangle has one angle is equal to 90° and two angles is equal to 40° and 50°.

➥ Answer) Right angled triangle

Because, it's angle is measuring 90°.

Right angled Triangle - A right angled triangle is a type of triangle that has one angle that measure 90°.