list of geometry theorems





Theorem
A statement that requires a proof is called a theorem..
Theorem
Theorem - Sum of the angles of a triangle is equal to two right angles. ABC is a triangle A + B + ACB = 180 o Produce BC to D. Through C draw CE || B..
Theorem
The length of the line segment AB, which joins A (x 1 , y 1 ) and B (x 2 , y 2 ) is given by ..
Theorem
The angle bisectors of a triangle pass through the same point..
Theorem
If two lines intersect, then the vertically opposite angles are congruen..
Theorem
Sum of the angles of a triangle is equal to two right angle..
Theorem 1
Theorem 1 - Parallelograms on the same base and between the same parallels are equal in area. ABCD and ABEF are two parallelograms on the same base AB and between the same parallels AB, DE area (ABCD) = area (ABEF) An alternate way of proving this theorem is as follows: Since bo..
Theorem 3
Theorem 3 - The area of a triangle is half that of a parallelogram standing on the same base and between the same parallels. and a parallelogram ABCD are standing on the same base AB and between the same parallels AB, DC. Complete the parallelogram ABP..
Theorem 3
The area of a triangle is half that of a parallelogram standing on the same base and between the same parallels. and a parallelogram ABCD are standing on the same base AB and between the same parallels AB, DC. Complete the parallelogram ABP..
Converse of a Theorem
Converse of a Theorem is the transposition of a statement consisting of 'data' and 'to prove' 'Data' becomes 'To Prove' and 'To prove' becomes 'Data' in the converse theorem..
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