Question

Q.No.5: Define the following
(a) right triangle
b) Quadrilateral
(c) Pentagon​

Answer 1

Right angle:-

In geometry and trigonometry, a right angle is an angle of exactly 90° (degrees), corresponding to a quarter turn. If a ray is placed so that its endpoint is on a line and the adjacent angles are equal, then they are right angles.

Quadrilateral :-

In Euclidean plane geometry, a quadrilateral is a polygon with four edges and four vertices. Other names for quadrilateral include quadrangle, tetragon, and 4-gon. A quadrilateral with vertices, and is sometimes denoted as.

Pentagon:-

five-sided polygon or 5-gon. The sum of the internal angles in a simple pentagon is 540°. A pentagon may be simple or self-intersecting.

Answer 2

Answer:

Here is your answer......

Step-by-step explanation:

(a) Right Triangle - A right triangle or right-angled triangle is a triangle in which one angle is a right angle. The relation between the sides and angles of a right triangle is the basis for trigonometry. The side opposite the right angle is called the hypotenuse. The sides adjacent to the right angle are called legs.

(b) Quadrilateral - A flat shape with four straight sides.

(c) Pentagon - A shape that has five straight sides.