Thread: Maths Help Wanted - Geometry Homework

Hi

My son has received this Angles Homework and we are lost on Question 2 i have uploaded a picture if you could help us. I have tried and tried but i have had no luck.

Hope one of yous can help

Thanks

Please understand that this is not a homework service nor is it a tutorial service. Therefore it is our practice to help. This is your son’s work he should be posting.

For #2, that uses the external angle theorem: The measure of an external angle of a triangle equals to the sum of the measures of the two opposite interior angles. So is part a) is the measure of the other opposite interior angle.

You have to know some basic properties about triangles. For example 2a) do you recognize a straight angle? This angle is divided in two angles and one of them is 101° so the other is ... . If you know this then you can determine the other angle.

Originally Posted by Siron

You have to know some basic properties about triangles. For example 2a) do you recognize a straight angle? This angle is divided in two angles and one of them is 101° so the other is ... . If you know this then you can determine the other angle.

Hi could you show/tell me how to work it out please my son is sitting beside me so he is kinda posting aswell. Im new to all these angles and im wondering if you could help me work it out

Thanks

Originally Posted by joshuafalls

Hi could you show/tell me how to work it out please my son is sitting beside me so he is kinda posting aswell. Im new to all these angles and im wondering if you could help me work it

Please read reply #2.

It's difficult to explain because I can't indicate the angles on the screen. But what I mean is the following. You see an angle of 101°, the side angle is 79° (this is one of the angles of the triangle) because the angle of 101° and 79° form a straight angle which is 180°. Now you have two angles of the triangle and so you can determine the other which is 180°-(79°+62°).

Is this clear? ...

Hi

Yes can you explain C a bit more ? as it seems the hardest one

Originally Posted by joshuafalls

Yes can you explain C a bit more ? as it seems the hardest one

See Reply #2.
Please understand that this is not a homework service nor is it a tutorial service. Therefore it is our practice to help. This is your son’s work he should be posting.

Dear Jashuafalls Jr and Sr,
Responders cannot break Forum Rules.If you Google Triangles you can find all the info you need.For 2c the two triangles are congruent.Look up meaning of symmetry

You will find some reference material >>here<<. Look there first, try to solve the problems and if you have difficulties come back with specific questions or tell us what you have tried and what difficulties you are having. Post your specific questions in a new thread, this one is closed.

CB