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Angles
Transversal Lines and Angles
Vocabulary
Find the missing angle
Triangle Triangle Triangle
100

Name the angle that is a straight line

Straight angle

100

All 4 angles inside a pair of parallel lines and around the transversal lines are called _________.

Interior Angles 

100

What is the name of a triangle with 2 of the same lengths and angles?

Isosceles Triangle

100

What is the missing angle if one of the complementary angle is 80 degrees?

10 degrees

100

What is the sum of the interior angles of a triangle?

180 degrees

200

Name the angle that is less than 90 degrees

Acute angle
200

Name the angles that are positioned on 'each side' of the transversal line on a pair of parallel lines.

Alternate angles 

200
Name the line that goes through a pair of parallel lines

Transversal

200
What is the size of eac of the angles of an isosleces triangle if the vertex is 40 degrees?

70 degrees each

200

A triangle with one of the angles being 90 degrees is called a ___________

Right triangle

300

Name the angles that addes to 180 degrees

Supplementary angles

300

Name angles that occupied the 'same' position on a pair of parallel lines with a transversal line.

Corresponding angles

300

How do you call something that's cut in half?

Bisect

300

Find the size of one of the exterior angles of a regular pentagon

72 degrees

300

What is the sum of the 'exterior' angles of a triangle?

360 degrees

400

Name the angle that goes around a point and make a circle

Angles at a point

400

Angles formed on each side of a pair of intersecting lines are called the _______.

Opposite Angles / Vertical Angles

400

Name a line that's intersects wth another and makes 90 degree angles

Perpendicular line

400

Find one of the interior angles of a 'regular' pentagon

108 degrees

400

what is one of the interior angles of an equaliteral triangle?

60 degrees

500
Name the angle that is greater than 180 degrees

Reflex angle

500

Name the angles on the 'same' side of the tansversal lines in between the pair of parallel lines

Co-interior angles / Consecutive angles

500

What is a scalene triangle?

It's a triangle with 3 different side lengths and angles.

500

'How' do you find one of the interior angles of a heptagon? 

firstly find the sum of the interior angles by doing (7-2) x 180 then divide the answer by 7 angles to get 1 angle size. (It'd be around 128.6 degrees)

500

A triangle with 3 angles, 45 degrees, 35 degrees, and 100 degrees (counting clockwise). What is the size of the exterior angle of angle 1?

135 degrees