2 Elementary Shapes

Question 1

What is a Scalence, Isosceles and Equilateral traingle?

Answer 1

Scalence - No sides are equal.
Isosceles - Two sides are equal
Equilateral - All three sides are equal

Question 2

What are acute, obtuse and right angled triangles?

Answer 2

Acute - All three angles of a triangle should be acute.
Obtuse - Any one angle should be obtuse.
Right angled - One angle is 90 degrees.

Question 3

Can we create a triangle with two obtuse angles? Why?

Answer 3

No. If two angles are obtuse their sides never meet.

Question 4

Can we create a triangle with two acute angles? Why is it possible?

Answer 4

If two angles are acute in a triangle, their sides are going to intersect at a point making it a triangle

Question 5

Can we create triangle with two right angles? Why?

Answer 5

If two angles are right angled, their sides never meet.

Question 6

A polygon with 3,4,5,6,8?

Answer 6

Triangle, Quadrilateral, Pentagon, Hexagon, Octagon

Question 7

Name some 3D shapes?

Answer 7

Prism, Pyramid, Cuboid, Cube, Sphere.

Question 8

What are faces, edges and vertices of a 3D shapes?

Answer 8

Faces - Flat surface
Edge - A line segment where two faces are met
Vertices - Three edges meet at a point called vertex.

Question 9

What is a prism and pyramid?

Answer 9

Prism - Any two opposite faces are equal (they are called bases), parallel and lateral faces may or may not be equal.
Pyramid - Only one base (could be of any shape - triangle, rectangle, square, pentagon, etc) but the other faces should be triangle.

Question 10

What are the other 3D shapes that doesn’t have straight edges?

Answer 10

Cylinder, Cone and Sphere.