Question

Traingles lesson all formulas class 10th​

Answer 1

Step-by-step explanation:

Area of Triangle

Area= ½ × base × height

Pythagorean Theorem

a2 + b2 = c2

Area of a Circle

Area = πr2

Circumference of a Circle

C = 2πr or πd

Area of a Parallelogram

Area = base × height

Area of a Trapezoid

Area = ½ × (base1 + base2) × height

Area of a Kite or a Rhombus

Area = ½ × (diagonal1 × diagonal2)

Area of a Square

Area = side2

Area of a Regular Polygon

Area = ½ × perimeter × apothem

Number of Diagonal in n-sided Polygon

Diagonals = ½ × n(n−3)

Slope

m = (y2−y1)/(x2−x1) = rise/run

Midpoint Formula

(xmp, ymp) = [(x1+x2)/2],[(y1+y2)/2]

Distance Formula

d = √[(x2−x1)2+(y2−y1)2]

Equation of a Circle

(x−h)2+(y−k)2 = r2

Answer 2

Perimeter p =a+b+c

side a=P﹣b﹣c

base = P﹣b﹣c

side c =p-a-b