Examples of Properties of Triangle
We will solve some of the examples of properties of triangle.
1. In the triangle, given write the names of its three sides, three angles and three vertices.
Solution:
Three sides of ∆PQR are: PQ, QR and RP
Three angles of ∆PQR are: ∠PQR, ∠QRP and ∠RPQ
Three vertices of ∆PQR are: P, Q and R
2. Measures of two angles of a triangle are 65° and 40°. Find the measure of its third angle.
Solution:
Measures of two angles of a ∆ are 65° and 40°
Sum of the measures of two angles = 65° + 40° = 105°
Sum of all three angles of ∆ = 180°
Therefore, measure of the third angle = 180° - 105° = 75°
3. Is the construction of a triangle possible in
which the lengths of sides are 5 cm, 4 cm and 9 cm?
Solution:
The lengths of the sides are 5 cm, 4 cm, 9 cm.
5 cm + 4 cm = 9 cm.
Then the sum of two smaller sides is equal to the third side. But in a
triangle, the sum of any two sides should be greater than the third side.
Hence, no triangle possible with sides 5 cm, 4 cm and 9 cm.
To Construct a Triangle whose Three Sides are given.
To Construct a Triangle when Two of its Sides and the included Angles are given.
To Construct a Triangle when Two of its Angles and the included Side are given.
To Construct a Right Triangle when its Hypotenuse and One Side are given.
Worksheet on Construction of Triangles.
5th Grade Geometry Page
5th Grade Math Problems
From Examples of Properties of Triangle to HOME PAGE
Didn't find what you were looking for? Or want to know more information about Math Only Math. Use this Google Search to find what you need.
Recent Articles
-
Months of the Year | List of 12 Months of the Year |Jan, Feb, Mar, Apr
Dec 01, 23 01:16 AM
There are 12 months in a year. The months are January, February, march, April, May, June, July, August, September, October, November and December. The year begins with the January month. December is t… -
Days of the Week | 7 Days of the Week | What are the Seven Days?
Nov 30, 23 10:59 PM
We know that, seven days of a week are Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday. A day has 24 hours. There are 52 weeks in a year. Fill in the missing dates and answer the questi… -
Types of Lines |Straight Lines|Curved Lines|Horizontal Lines| Vertical
Nov 30, 23 01:08 PM
What are the different types of lines? There are two different kinds of lines. (i) Straight line and (ii) Curved line. There are three different types of straight lines. (i) Horizontal lines, (ii) Ver…
New! Comments
Have your say about what you just read! Leave me a comment in the box below. Ask a Question or Answer a Question.