Question

An exterior angle of a triangle is equal to the sum of its .............. opposite angles. *

Right angle
Exterior
interior
None of these

Q.15 The sum of all the interior angles of a triangle is ___________. *

180°
90°
45°
None of these
Q. 16 In mathematics __________ indicates how many times one number contains another.

A fraction
A triangle
a ratio
None of these
Q.17 The proportion is used to express the relation of two ......

Ratios
Fractions
Integers
None of these
Q.18 An exponent is a number or letter written above and to the right of a mathematical expression called the _____________. *


Power
Ratio
base
None of these
Q.19 The ______________ method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value. *

Simplify
unitary
Both 1&2
None of these
Q.20 In mathematics, a _____________ is a symbol which functions as a placeholder for varying expression or quantities, and is often used to represent an arbitrary element of a set. *
1
Algebraic expressions
Base
variable
None of these
Q.21. A rectangular grassy lawn measuring 40 m by 25 m is to be surrounded externally by a path which is 2 m wide. Calculate the cost of leveling the path at the rate of Rs 8.25 per square meter. *

Captionless Image​

Answer 1

Answer:

An exterior angle of a triangle is equal to the sum of its interior opposite angles. *

The sum of all the interior angles of a triangle is 180 degree

In mathematics _fraction_ indicates how many times one number contains another.

An exponent is a number or letter written above and to the right of a mathematical expression called the power

Answer 2

Step-by-step explanation:

A) interior opposite angles

Q15) 180

Q16) ratio

Q17) fractions

Q18) power

Q19) unitary

Q20) variable

Q21) rs23.2840

PLS MARK AS BRAINLIEST ❤️❤️❤️