Classification of Triangles

Triangle $\mathrm{ABC}$ has ______ vertices. The vertices are ______, ______, and ______. $△\mathrm{ABC}$ has ______ sides. The sides are _____, ______, and ______. $△\mathrm{ABC}$ has ______ angles. The angles are _____, ______ and $\angle \mathrm{ABC}$.

If one angle of a right-angled triangle is $30°$ what are the measures of the other two angles?

Is it possible to construct a triangle with a line segment measuring $5 \mathrm{cm}, 2 \mathrm{cm} \text{and} 8 \mathrm{cm}$ long? Let's answer with reasons.

What is the degree measure of each angle of an equilateral triangle? 

Can two angles of a triangle both be right angles or $90$ degrees? Let's answer with reasons.

When will a right-angled triangle be a right-angled isosceles triangle?

What is an acute-angled triangle? Let's draw and illustrate.

What will be values of three angles of right angled isosceles triagle.

What is the longest side of a right-angled triangle called?

Can a right-angled triangle ever be an equilateral triangle? Let's answer with reasons.

Is it possible to construct a triangle with a line segment measuring $3 \mathrm{cm}, 6 \mathrm{cm} \text{and} 9 \mathrm{cm}$? Let's answer with reasons.

Let's make triangles.

Measure the sides of the triangle and identify the type of triangle and colour it.

Measure the sides of the triangle and identify the type of triangle.

Measure the length of the sides of the three triangular region and find which the given triangle is scalene triangle.

Measure the length of the sides of the three triangular region.

$△XYZ$ is an

Scalene triangles have all sides equal.

Is the given triangle scalene, isosceles or equilateral?

A triangle whose all angles are less than $90°$ is called