Angles
What tool do we use to measure angles?
What is a protractor.
A right triangle always has one angle that measures how many degrees?
What is 90 degrees?
If a pizza is cut into 8 equal slices and you eat 3 slices, what fraction of the pizza did you eat?
3/8
1/2 = ?/10
5/10
Simplify 6/9.
2/3
How many degrees are in a right angle?
What is 90 degrees?
True or False: A right triangle can have two right angles.
False.
A bag has 12 marbles, 4 of which are red. What fraction of the marbles are red?
4/12 or 1/3
3/4 = ?/8
6/8
Simplify 12/16.
3/4
An angle smaller than a right angle is called what?
What is an acute angle?
How many sides of an isosceles triangle are equal?
Two.
Samantha baked 12 cupcakes. She gave 1/3 of them to her friends and ate 1/4 of them herself. How many cupcakes did she give to her friends?
1/3 of 12 = 4 cupcakes
2/5 = ?/15
6/15
True or False: The fraction 18/24 simplifies to 6/8.
False (it simplifies to 3/4).
An angle larger than a right angle but smaller than a straight angle is called what?
What is an obtuse angle?
If one angle in a triangle is 90° and another is 40°, what is the measure of the third angle?
What is 50 degrees?
Samantha baked 12 cupcakes. She gave 1/3 of them to her friends and ate 1/4 of them herself. How many did she eat herself?
1/4 of 12 = 3 cupcakes.
7/9 = ?/27
21/27
True or False: A recipe uses 8/12 of a cup of milk. The fraction 8/12 cannot be simplified.
False (it simplifies to 2/3).
How many degrees are in a straight angle?
What is 180 degrees?
If one angle of an equilateral triangle is 60°, what are the measures of the other two angles?
60° each (all angles are equal).
Samantha baked 12 cupcakes. She gave 1/3 of them to her friends and ate 1/4 of them herself. What fraction of the cupcakes is left?
12 − 4 − 3 = 5 cupcakes left → 5/12 of the cupcakes remain.
5/12 = ?/36
15/36
A bakery has 96 muffins, and 72 of them are chocolate. The fraction of chocolate muffins is 72/96. True or False: This fraction simplifies to 3/4.
True (divide numerator and denominator by 24 → 72 ÷ 24 = 3, 96 ÷ 24 = 4 → 3/4).