Task 2
Your task is to steady the technique of solving the unknown/s stated in the questions below. Study the deduction and reasoning skills provided in the table.
(1) Given: m∠DGH = 131Find: m∠GHK
Prove: m∠PTR = m∠STQ
Prove: m∠AJH = 117
Find: m∠3
(5) Theorem 1: Prove that the angle sum of a triangle is 180º.
Proof:
Consider any triangle ABC in which the angles are aº, bº and cº. Draw a line through A parallel to BC.Task 3
Complete the following:
1. Look at this diagram, write as many pairs as you can of
(a) vertically opposite(b) corresponding
(c) alternate
(d) interior angles
2. Find the values of the pronumerals x and y in the following diagram.
sources:
http://www.wyzant.com
http://www.mathsteacher.com.au/year9/ch13_geometry/05_deductive/geometry.htm
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