Fractions
1/3 + 1/5 =
8/15
-3 + 2x = 11
x = 7
(+3) + (-14) =
-11
3yac - 2ac + 6acy =
9acy - 2ac
(a) What is a right triangle?
(b) What is a acute triangle?
(c) what is a obtuse triangle?
(a) a right triangle is a triangle with 90 degree angles.
(b) a acute triangle is a triangle with angles less than 90 degrees.
(C) a obtuse triangle is a triangle with angles greater than 90 degrees.
14/15 - 2/3 =
4/15
x + 9 = 18 - 2x
x = 3
(-3) + (-14) =
-17
4 - x - 2xy + 3x - 7yx =
4 + 2x - 9xy
What are complementary angles?
If the sum of two angles is 90 degrees it is said to be complementary.
3/5 + 1/8 + 1/8 =
17/20
7(3x) -20 = 22
x = 2
-7 + (-8) + 3 =
-12
-2xy + 3x + 4 - 4xy - 2x =
-6xy + x + 4
What are supplementary angles?
If the sum of two angles is 180 degrees it is said to be supplementary.
5/11 - 1/6 +2/3 =
21/22
7(3x + 4) + 20 = 3(x +4)
x = -2
-2 + 11 -4 +3 -8 =
0
3xyz + 2zxy - 7zyx + 2xy =
-2xyz + 2xy
(a) What is an isosceles triangle?
(b) What is an scalene triangle?
(b) An Scalene triangle is a triangle that has all sides of different length.
59/8 + 19/3 =
329/24
9(3x -5) - 18 = 5(2x + 1)
x=4
7 - 3 + 2 - 11 + 4 - 5 + 3 =
-3
xym - 3ymx - 4xmy - 3my + 2ym =
-6mxy - my
If a triangle has to angles that are 100 and 40 what is the measure of the third angle?
40 degrees