What is the sum of the two angles of a right-angled triangle, other than the right angle?

Identify the triangle with the measures of sides as $6 \mathrm{cm}, 6 \mathrm{cm} \& 6 \mathrm{cm}$. ( Scalene triangle/ Isosceles triangle/ Equilateral triangle)

Classify the following triangle as scalene, isosceles, or equilateral.

Classify the following as an acute, obtuse, or right triangle.

Classify the triangle with the following measures of sides as scalene, isosceles, or equilateral.

$4 \mathrm{cm}, 2 \mathrm{cm}, 4 \mathrm{cm}$

Classify the following triangle as scalene, isosceles, or equilateral.

Try to construct triangles using match sticks. Some are shown here. Can you make a triangle with
$3$ matchsticks?
(Remember you have to use all the available matchsticks in each case)
Name the type of triangle in each case.
If you cannot make a triangle, think of reasons for it.

Classify the triangle with the following measures of sides as scalene, isosceles, or equilateral.

$2 \mathrm{cm}, 3 \mathrm{cm}, 4 \mathrm{cm}$

Classify the triangle having dimensions $7 \mathrm{cm},\mathit{ }4\mathit{ }\mathrm{cm}, 5 \mathrm{cm}$ as scalene, isosceles, or equilateral.

Classify the following as an acute, obtuse, or right triangle.

In the figure below, $\angle DBC=x°$, find the value of $x$.

Classify the following triangle as scalene, isosceles, or equilateral.

Classify the following as an acute, obtuse, or right triangle.

Classify the following as an acute triangle, obtuse triangle, or right triangle.

Name the types of following triangles:

Triangle with lengths of sides $7 \mathrm{c}\mathrm{m}, 8 \mathrm{c}\mathrm{m}$ and $9 \mathrm{c}\mathrm{m}$