##### Geogebra Triangle Questions

 Algebra Tutor: None Selected Time limit: 1 Day

With Geogebra, and using the polygon tool, plot these three points:

Point A: (1,4)

Point B: (1,0)

Point C: (5,0)

Using the Angle Measure Finder, click on angle CBA, and then BAC. (Make sure to go in a clockwise direction...)

What was Angle A measurement?

What was Angle B measurement?

(Hint: You will have one 90 degree angle and one 45 degree angle.)

What is the angle measure of angle ABC?

What is the sum of ANY triangle?

May 11th, 2015

What is the angle measure of angle ABC?

• Thee size of angle ABC is 60 degrees. We write this as follows: To measure the size of angle PQR, place the protractor over the angle so that the centre of the protractor is directly over the angle's vertex, Q; and the base line of the protractor is along the arm, PQ, of the angle.

What is the sum of ANY triangle?

• The sum of measures of these three angles of any triangle is invariably equal to the straight angle, also expressed as 180°, π radians, two right angles, or a half-turn.

May 11th, 2015

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May 11th, 2015
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May 11th, 2015
Dec 10th, 2016
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