Circle Theorems
... center of the circle as shown below. By drawing the ray through the center, I can then construct a triangle where one of the angles is a central angle – as shown below. ∆AOB is isosceles because two of the sides are radii, that means that ∠A = ∠B; base angles of an isosceles triangle are congruent. ...
... center of the circle as shown below. By drawing the ray through the center, I can then construct a triangle where one of the angles is a central angle – as shown below. ∆AOB is isosceles because two of the sides are radii, that means that ∠A = ∠B; base angles of an isosceles triangle are congruent. ...
YR4 Geometry EXTRA MATHS HOMEWORK
... How many lines of symmetry does a circle have? Any straight line that goes through the centre of a circle is a line of symmetry. There is no limit to the number of slightly diferent lines that could go through the centre of a circle, so we say it has infinite lines of symmetry. ...
... How many lines of symmetry does a circle have? Any straight line that goes through the centre of a circle is a line of symmetry. There is no limit to the number of slightly diferent lines that could go through the centre of a circle, so we say it has infinite lines of symmetry. ...
CONGRUENT TRIANGLES
... to measure all six parts (three sides and three angles) of every triangle to figure out what triangles are congruent? If not, what is the minimum amount of parts I need? Object: To determine the minimum amount necessary to prove two triangles are congruent and determine if it matters what parts I ha ...
... to measure all six parts (three sides and three angles) of every triangle to figure out what triangles are congruent? If not, what is the minimum amount of parts I need? Object: To determine the minimum amount necessary to prove two triangles are congruent and determine if it matters what parts I ha ...
Student Activity DOC
... b. If you have nested triangles with ∡A in common, what conditions are necessary for the triangles to be similar? Write your statement(s) in if-then form. ...
... b. If you have nested triangles with ∡A in common, what conditions are necessary for the triangles to be similar? Write your statement(s) in if-then form. ...
Heron`s Formula for Triangular Area
... In a right-angled triangle, if a perpendicular is drawn from the right angle to the base, the triangles on each side of it are similar to the whole triangle and to one another. ...
... In a right-angled triangle, if a perpendicular is drawn from the right angle to the base, the triangles on each side of it are similar to the whole triangle and to one another. ...
