Arithmetic
Arithmetic Progression
Associative Property
Averages
Brackets
Closure Property
Commutative Property
Conversion of Measurement Units
Cube Root
Decimal
Divisibility Principles
Equality
Exponents
Factors
Fractions
Fundamental Operations
H.C.F / G.C.D
Integers
L.C.M
Multiples
Multiplicative Identity
Multiplicative Inverse
Numbers
Percentages
Profit and Loss
Ratio and Proportion
Simple Interest
Square Root
Unitary Method
Algebra
Cartesian System
Order Relation
Polynomials
Probability
Standard Identities & their applications
Transpose
Geometry
Basic Geometrical Terms
Circle
Curves
Angles
Define Line, Line Segment and Rays
Non-Collinear Points
Parallelogram
Rectangle
Rhombus
Square
Three dimensional object
Trapezium
Triangle
Trigonometry
Trigonometry Ratios
Data-Handling
Arithmetic Mean
Frequency Distribution Table
Graphs
Median
Mode
Range

Videos
Solved Problems
Home >> Triangle >> Adjacent Interior Angle of Triangle >> Examples

## Adjacent Interior Angle of Triangle : Solved Examples

 Properties Types / Classification Perimeter of Equilateral Triangle Median of Triangle Interior of a Triangle Exterior of a Triangle Altitude of a Triangle Interior Angles of Triangle Exterior Angles of Triangle Interior Opposite Angles of Triangle Adjacent Interior Angle of Triangle Congruent Triangles Area of Triangle Area of Triangle by Heron's Formula Construction of Triangle (compass)

 Find the measure of adjacent interior angle of a triangle, whose exterior angles is 80° Let measure of adjacent interior angle = x And exterior angles = 80° Now we know that "sum of an exterior angle of a triangle and its adjacent angle is equals to 180", so we get: Exterior angle of a triangle + adjacent angle = 180° Put the values of exterior angle and adjacent angle from above and we get: x° + 80° = 180° Subtraction 80° x° = 100° Hence, measure of adjacent interior angle = 100°

### Related Question Examples

 What can you say about the sum of an exterior angle of a triangle and its adjacent angle ? Find measure of ∠ CBD in the following figure: Find the measure of adjacent interior angle of a triangle, whose exterior angles is 80°

Copyright@2022 Algebraden.com (Math, Algebra & Geometry tutorials for school and home education)